Propeller Upblast Fans

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LXU/LEU

LTU

AUD-TUD

AUB EUB TUD

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

Standard Construction Features

AMCA-Sound & Air Cert. logo

ISO 9001, US-Green , CSA, US-C-UL, and logos -by model

LOREN COOK COMPANY Propeller Upblast fans are designed for industrial and commercial applications requiring movement of large volume of air with low static pressures and discharge of air up and away from a building. All units are produced in an ISO 9001 certified facility and are listed by Underwriters Laboratory (UL 705) and UL Listed for Canada (cUL 705).

  • Exhausted air is naturally diluted in the atmosphere and carried away by air currents
  • Offered in both low silhouette and standard versions.
  • Low silhouette units are especially suited for use in metal buildings with standing seam roofs where service of the motor and drive components from inside the building is desired.
A-Series Cast Airfoil Aluminum Prop
  • Designed for heavy commercial or industrial applications where large volumes of air are required at low static pressures.
    Constructed of heavy gauge aluminum with six cast blades and a cast hub.
    Blade pitch is determined at the factory and the blades are locked into place by a roll pin.
    Statically and dynamically balanced for vibration free operation.

E-Series Extruded Airfoil Aluminum Prop

  • Designed for use where higher static pressures are required.
  • Constructed with six extruded aluminum airfoil blades and mounted to a cast aluminum hub.
  • Blade pitch is determined at the factory and the blades are locked into place by a roll pin.
  • “E Series” blade has a non-overloading characteristic such as is found in a centrifugal type wheel.
  • Statically and dynamically balanced for vibration free operation.

Triton-Series Steel Prop

  • Designed using Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) to provide optimum air flow, efficiency, quality and durability.
  • Constructed of heavy gauge steel components in a fully welded assembly.
  • Designed for large volumes of air at medium pressure levels.
  • Statically and dynamically balanced for vibration free operation.

XStream-Series Steel Prop

  • Designed using Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) to provide optimum air flow, efficiency, quality and durability.
  • Available in both low pressure (LXUL) and medium pressure (LXUM) models providing a wide performance range, high pressure capabilities, and low noise levels.
  • Constructed of fabricated steel blades securely attached to a minimum 7 gauge steel hub.
  • Statically and dynamically balanced for vibration free operation.
Related Documents

See the Downloads tab for specifications, submittals and FanDrafter files

See also Propeller Roof
See also Propeller Inline
See also Propeller Hooded
See also Propeller Wall Fans

  • LXUL / LXUM

  • LEU

  • LTU

  • AUD

  • AUB

  • EUB

  • TUD

  • TUB

  • TUBSC

  • Downloads

lxu

LOREN COOK COMPANY certifies that the LXUL/LXUM shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Type LXUL/LXUM are furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

LXUL / LXUM

Upblast Roof Fan
Low Silhouette
X.STREAM Propeller
Belt Drive

  • LXU/LXUM are low silhouette units that utilize the COOK “X.STREAM Series” steel propeller.
  • LXUL/LXUM are belt drive units available in 8 sizes from 20 to 60 inches. Performance ranges from 3,300 to 59,000 CFM with static pressures from 0 to .625 inches.

Description: The fan shall be a low profile, belt driven, upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Sound and Air Performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The motor, bearings and drives shall be mounted on a tubular steel power assembly. The power assembly shall be welded to a minimum 14 gauge steel base. The base shall have an integral venturi and continuously welded curb cap corners. Fan housing shall be minimum 14 gauge steel, bolted to the fan base. Fan shall have butterfly discharge dampers of aluminum or steel construction with a high volume rain gutter to prevent rain infiltration. Dampers shall be protected by a continuously welded steel windband. Windband shall be minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. The fan shall include integral lifting lugs capable of safely supporting the total weight of the fan with motor. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be a high-efficiency fabricated steel design with blades securely fastened to a minimum 7 gauge steel hub. The hub shall be keyed and locked to the fan shaft utilizing two setscrews. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be cast pillowblock ball type selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model LXUM as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

pw-xwd dimension drawing

Size A Dia B C D Max. E T Sq. Steel Gauge Roof Opening Square Approx Ship Wt. Lbs.
Base Housing Baffle
20 27-3/8 24-1/8 22-1/8 21 2 32 14 14 18 27-1/2 300
24 31-3/8 28 26 21 3 36 14 14 18 31-1/2 370
30 37-3/8 34 32 21 3 42 14 14 18 37-1/2 440
36 43-3/8 38 36 21 3 48 14 14 18 43-1/2 500
42 49-3/8 45 43 21 3 54 14 14 18 49-1/2 590
48 55-3/8 50 48 24 3 60 14 14 18 55-1/2 655
54 61-3/8 46 44 28 3 66 14 14 16 61-1/2 800
60 67-3/8 51 49 28 3 72 14 14 16 67-1/2 1000
All dimensions in inches. *Roof opening size for curbs supplied by LOREN COOK COMPANY only. Shipping weights are less motor.

LOREN COOK COMPANY certifies that the LEU shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Type LEU is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

LEU

Upblast Roof Fan
Low Silhouette
Extruded Aluminum Propeller Belt Drive

  • LEU is a low silhouette unit that utilizes the COOK “E Series” extruded aluminum airfoil propeller.
  • LEU is a belt drive unit available in 8 sizes from 20 to 60 inches. Performance ranges from 3,400 to 59,000 CFM with static pressures from 0 to 1 inch.

Description: The fan shall be a low profile, belt driven, upblast propeller roof fan. Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA certified ratings seal for sound and air performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The motor, bearings and drives shall be mounted on a tubular steel power assembly. The power assembly shall be welded to a minimum 14 gauge steel base. The base shall have an integral venturi and continuously welded curb cap corners. Fan housing shall be minimum 14 gauge steel and bolted to the fan base. Fan shall have butterfly discharge dampers of aluminum or steel construction with a high volume rain gutter to prevent rain infiltration. Dampers shall be protected by a continuously welded steel windband. Windband shall be minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. The fan shall include integral lifting lugs capable of safely supporting the total weight of the fan with motor. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be extruded aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans. Motor: Motor shall be NEMA design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be cast pillowblock ball type selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model LEU as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia B C D Max. E T Sq. Steel Gauge Roof Opening Square Approx Ship Wt. Lbs.
Base Housing Baffle
20 27-3/8 24-1/8 22-1/8 21 2 32 14 14 18 27-1/2 300
24 31-3/8 28 26 21 3 36 14 14 18 31-1/2 370
30 37-3/8 34 32 21 3 42 14 14 18 37-1/2 440
36 43-3/8 38 36 21 3 48 14 14 18 43-1/2 500
42 49-3/8 45 43 21 3 54 14 14 18 49-1/2 590
48 55-3/8 50 48 24 3 60 14 14 18 55-1/2 655
54 61-3/8 46 44 28 3 66 14 14 16 61-1/2 800
60 67-3/8 51 49 28 3 72 14 14 16 67-1/2 1000
All dimensions in inches. Weights in pounds, less motor. *Roof opening size for curbs supplied by LOREN COOK COMPANY only.

LOREN COOK COMPANY certifies that the LTU shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type LTU is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

LTU

Upblast Roof Fan
Low Silhouette
TRITON® Steel Propeller
Belt Drive

  • LTU is a low silhouette unit that utilizes the COOK “TRITON® Series” steel propeller.
  • LTU is a belt drive unit available in 8 sizes from 20 to 60 inches. Performance ranges from 3,400 to 73,000 CFM with static pressures from 0 to 1.125 inches.

Description: The fan shall be a low silhouette, belt driven, upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Air Performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The motor, bearings and drives shall be mounted on a tubular steel power assembly. The power assembly shall be welded to a minimum 14 gauge steel base. The base shall have an integral venturi and continuously welded curb cap corners. Fan housing shall be minimum 14 gauge steel, bolted to the fan base. Fan shall have butterfly discharge dampers of aluminum or steel construction with a high volume rain gutter to prevent rain infiltration. Dampers shall be protected by a continuously welded steel windband. Windband shall be minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. The fan shall include integral lifting lugs capable of safely supporting the total weight of the fan with motor. Unit shall bear an engraved aluminum nameplate and shipped in ISTA certified transit tested packaging.

Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be a high-efficiency fabricated design with blades securely fastened to a minimum 7 gauge steel hub. The hub shall be keyed and locked to the fan shaft utilizing two set screws. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be NEMA design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be cast pillowblock ball type selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model LTU as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia B C D Max. E T Sq. Steel Gauge Roof Opening Square Approx Ship Wt. Lbs.
Base Housing Baffle
20 27-3/8 24-1/8 22-1/8 21 2 32 14 14 18 27-1/2 300
24 31-3/8 28 26 21 3 36 14 14 18 31-1/2 370
30 37-3/8 34 32 21 3 42 14 14 18 37-1/2 440
36 43-3/8 38 36 21 3 48 14 14 18 43-1/2 500
42 49-3/8 45 43 21 3 54 14 14 18 49-1/2 590
48 55-3/8 50 48 24 3 60 14 14 18 55-1/2 655
54 61-3/8 46 44 28 3 66 14 14 16 61-1/2 800
60 67-3/8 51 49 28 3 72 14 14 16 67-1/2 1000
All dimensions in inches. Weights in pounds, less motor. *Roof opening size for curbs supplied by LOREN COOK COMPANY only.

LOREN COOK COMPANY certifies that the AUD shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type AUD is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

AUD

Upblast Roof Fan
Cast Aluminum Propeller
Direct Drive

  • AUD isstandard units that utilize the COOK “A Series” cast aluminum airfoil propeller.
  • AUD is a direct drive unit available in 5 sizes from 24 to 48 inches. Performance ranges from 3,600 to 35,000 CFM with static pressures from 0 to .250 inches.

Description:The fan shall be a direct drive upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA certified ratings seal for air performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The motor and propeller shall be mounted on a minimum 10 gauge welded steel power assembly inside a minimum 14 gauge welded steel housing. The housing shall be continuously welded to a minimum 14 gauge steel base with integral spun venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. Dampers shall be protected by a continuously welded steel windband of minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM and static pressure. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be cast aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans. Motor: Motor shall be NEMA design B with a minimum of class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Product: Fan shall be model AUD as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia B C D Max. E T Sq. Max Motor Frame Approx. Ship.
Wt. - lbs. Steel
Approx. Ship.
Wt. - lbs. Alum.
Roof Opening Square *
24 31-1/4 19-1/8 48-3/8 3 14 36 145T 342 272 31-1/2
30 37-1/4 23-5/8 54-1/8 3 15 42 184T 445 345 37-1/2
36 43-1/4 25-5/8 61-1/8 3 17 48 256T 570 430 43-1/2
42 49-1/4 27-5/8 64-9/16 3 17 54 256T 671 510 49-1/2
48 55-1/4 31-1/4 70-13/16 3 17 60 256T 840 610 55-1/2
All dimensions in inches. *Roof opening size for curbs supplied by Cook only. Shipping weight includes standard ODP motor.

LOREN COOK COMPANY certifies that the AUB shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type AUB is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

AUB

Upblast Roof Fan
Cast Aluminum Propeller
Belt Drive

  • AUB is standard units that utilize the COOK “A Series” cast aluminum airfoil propeller.
  • AUB is a belt drive unit available in 5 sizes from 24 to 48 inches. Performance ranges from 4,000 to 35,000 CFM with static pressures from 0 to .250 inches.

Description: The fan shall be a belt driven upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA certified ratings seal for air performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The bearings and drives shall be mounted on a minimum 10 gauge welded steel power assembly. The motor shall be mounted to a minimum 14 gauge steel motor base welded to the outside of the minimum 14 gauge welded steel fan housing. Minimum 10 gauge adjustable motor plate shall utilize threaded studs for positive belt tensioning. The motor shall be protected by a minimum 16 gauge weather cover. The fan housing shall be continuously welded to a fan base with integral spun venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. The damper assembly shall be protected by a continuously welded steel windband of minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging.

Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be cast aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motors: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product:Fan shall be model AUB as manufactured by
LOREN COOK COMPANY of Springfield, Missouri

Dimensions (Inches)

AQB drawing
Size A Dia B C D Max. E T Sq. Max Motor Frame Approx. Ship.
Wt. - lbs. Steel
Approx. Ship.
Wt. - lbs. Alum.
Roof Opening Square *
24 31-1/4 19-1/8 48-3/8 3 16-1/2  36 184T 335 280 31-1/2
30 37-1/4 23-5/8 54-1/8 3 13-13/16 42 254T 425 349 37-1/2
36 43-1/4 25-5/8 61-1/8 3 16-1/8 48 254T 510 378 43-1/2
42 49-1/4 27-5/8 64-9/16 3 16-1/8 54 254T 605 650 49-1/2
48 55-1/4 31-1/4 70-13/16 3 14-13/16 60 254T 730 750 55-1/2
All dimensions in inches. *Roof opening size for curbs supplied by Cook only. Shipping weight includes standard ODP motor.

LOREN COOK COMPANY certifies that the EUB shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type EUB is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

EUB

Upblast Roof Fan
Extruded Aluminum Propeller
Belt Drive

  • EUB is a standard unit that utilizes the COOK “E Series” extruded aluminum airfoil propeller.
  • EUB is a belt drive unit available in 8 sizes from 24 to 72 inches. Performance ranges from 4,000 to 94,000 CFM with static pressures from 0 to 1.250 inches.

Description: The fan shall be a belt driven upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA certified ratings seal for air performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The bearings and drives shall be mounted on a minimum 10 gauge welded steel power assembly. The motor shall be mounted to a minimum 14 gauge steel motor base welded to the outside of the minimum 14 gauge welded steel fan housing. Minimum 10 gauge adjustable motor plate shall utilize threaded studs for positive belt tensioning. The motor shall be protected by a minimum 16 gauge weather cover. The housing shall be continuously welded to a minimum 14 gauge steel base with integral spun venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. The damper assembly shall be protected by a continuously welded steel windband of minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Unit shall bear an engraved aluminum nameplate. Nameplate shall indicate design CFM, static pressure, and maximum fan RPM. Unit shall be shipped in ISTA certified transit tested packaging. Coating: All steel fan components shall be Lorenized™ with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be extruded aluminum airfoil design with cast aluminum hub. The blade pitch shall be factory set and locked using set screws and roll pin. The hub shall be keyed and locked to the shaft utilizing two set screws or a taper lock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motors: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be model EUB as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia B C D Max. E T Sq. Max Motor Frame Approx. Ship.
Wt. - lbs. Steel
Approx. Ship.
Wt. - lbs. Alum.
Roof Opening Square *
24 31-1/4 19-1/8 48-3/8 3 16-1/2 36 184T 335 280 31-1/2
30 37-1/4 23-5/8 54-1/8 3 13-13/16 42 254T 425 349 37-1/2
36 43-1/4 25-5/8 61-1/8 3 16-1/8 48 254T 510 378 43-1/2
42 49-1/4 27-5/8 64-9/16 3 16-1/8 54 254T 650 435 49-1/2
48 55-1/4 31-1/4 70-13/16 3 14-13/16 60 284T 750 490 55-1/2
54 61-1/4 35-1/4 77 3 17-1/4 66 284T 950 - 61-1/2
60 67-1/4 36-1/2 78-1/4 3 15-1/8 72 284T 1200 - 67-1/2
72 79 44 92-3/4 3 17-1/8 84 284T 1510 - 79-1/2
All dimensions in inches. Shipping weights are less motor. * Roof opening size for curbs supplied by Cook only.

Type TUD is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

TUD

Upblast Roof Fan
TRITON® Steel Propeller
Direct Drive

  • TUD is a standard unit that utilizes the COOK TRITON® Series extruded aluminum airfoil propeller.
  • TUD is a direct drive unit available in 8 sizes from 20 to 60 inches. Performance ranges from 3,400 to 60,000 CFM with static pressures from 0 to 1 inch.

Description:Fan shall be a direct drive upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705).

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The motor and propeller shall be mounted on a minimum 10 gauge welded steel power assembly inside a minimum 14 gauge welded steel housing. The housing shall be continuously welded to a minimum 14 gauge steel base with integral venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. Dampers shall be protected by a continuously welded steel windband of
minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Coating: All steel fan components shall be Lorenized® with an electrostatically applied, baked polyester powder coating. Each component shall be subject
to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be a high-efficiency fabricated steel design with blades securely fastened to a minimum 7 gauge steel hub. The hub shall be keyed and locked to the motor shaft utilizing two setscrews or a taperlock bushing.Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Product: Fan shall be type TUD as manufactured by LOREN COOK COMPANY of Springfield, Missouri.s

Dimensions (Inches)

AQB drawing
Size A Dia. B C D E T Sq. Max. Motor Frame Approx. Ship.
Wt. - lbs. Steel
Roof Opening Square*
20 20-5/8 18-1/8 47-3/4 2 14 32 145T 310 27-1/2
24 31-1/4 19-1/8 48-3/8 3 14 36 145T 380 31-1/2
30 37-1/4 23-5/8 54-1/8 3 16-1/4 42 184T 470 37-1/2
36 43-1/4 25-5/8 61-1/8 3 17 48 256T 610 43-1/2
42 49-1/4 27-7/8 64-9/16 3 18-1/8 54 256T 730 49-1/2
48 55-1/4 31-1/4 70-13/16 3 20-9/16 60 256T 1040 55-1/2
54 60-3/4 35-1/4 79-1/4 3 19-1/8 66 256T 1440 61-1/2
60 72-3/4 36-1/2 83-3/4 3 23-1/4 72 256T 1640 67-1/2
All dimensions in inches. Shipping weights are less motor. * Roof opening size for curbs supplied by Cook only.8

LOREN COOK COMPANY certifies that the TUB shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type TUB is furnished standard with UL 705 and CUL 705 listing (Power Ventilator/ZACT) when furnished with factory supplied motor.

All sizes are available with express service. Read more.

TUB

Upblast Roof Fan
TRITON® Steel Propeller
Belt Drive

  • TUB is a standard unit that utilizes the COOK TRITON® Series extruded aluminum airfoil propeller.
  • TUB is available with UL/cUL listing for “Power Ventilator for Smoke Control Systems”.
  • TUB / TUBSC are belt drive units available in 9 sizes from 20 to 72 inches. Performance ranges from 3,300 to 92,000 CFM with static pressures from 0 to 1.25 inch.

Description: Fan shall be belt driven upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories (UL 705) and UL listed for Canada (cUL 705). Fan shall bear the AMCA Certified Ratings Seal for Air Performance.

Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The bearings and drives shall be mounted on a minimum 10 gauge welded steel power assembly. The motor shall be mounted to a minimum 14 gauge steel motor base welded to the outside of the minimum 14 gauge welded steel fan housing. Minimum 10 gauge adjustable motor plate shall utilize threaded studs for positive belt tensioning. The motor shall be protected by a minimum 16 gauge weather cover. The fan housing shall be continuously welded to a fan base with integral venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. The damper assembly shall be protected by a continuously welded steel windband of minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Coating: All steel fan components shall be Lorenized® with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be a high-efficiency fabricated steel design with blades securely fastened to a minimum 7 gauge steel hub. The hub shall be keyed and locked to the fan shaft utilizing two setscrews or a taperlock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans.

Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be type TUB as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia. B C D E T Sq. Max. Motor Frame Approx. Ship.
Wt. - lbs. Steel
Roof Opening Square*
20 27-1/4 18-1/8 47-3/4 2 16-13/16 32 184T 330 27-1/2
24 31-1/4 19-1/8 48-3/8 3 16-13/16 36 184T 380 31-1/2
30 37-1/4 23-5/8 54-1/8 3 16-1/16 42 254T 480 37-1/2
36 43-1/4 25-5/8 61-1/8 3 16-5/16 48 254T 570 43-1/2
42 49-1/4 27-7/8 64-9/16 3 17-7/16 54 254T 670 49-1/2
48 55-1/4 31-1/4 70-13/16 3 18-7/8 60 284T 780 55-1/2
54 61-1/4 35-1/4 79-1/4 3 20-7/8 66 284T 1030 61-1/2
60 67-1/4 36-1/2 83-3/4 3 20-7/8 72 284T 1260 67-1/2
All dimensions in inches. Shipping weights are less motor. * Roof opening size for curbs supplied by Cook only

LOREN COOK COMPANY certifies that the TUBSC shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

Type TUBSC is available with UL and cUL listing “Power Ventilator for Smoke Control Systems” when furnished with factory supplied motor.

All sizes are available with express service. Read more.

TUBSC

Upblast Roof Fan
TRITON® Steel Propeller
Belt Drive

  • TUB is a standard unit that utilizes the COOK TRITON® Series extruded aluminum airfoil propeller.
  • TUBSC is UL listed “Power Ventilator for Smoke Control Systems”.
  • TUB / TUBSC are belt drive units available in 9 sizes from 20 to 72 inches. Performance ranges from 3,300 to 92,000 CFM with static pressures from 0 to 1.25 inch.

Description: The fan shall be a belt driven high temperature upblast propeller roof fan.

Certifications: Fan shall be manufactured at an ISO 9001 certified facility. Fan shall be listed by Underwriters Laboratories as a “Power Ventilator for Smoke Control Systems” and UL listed as “Power Ventilator for Smoke Control Systems Certified for Canada”. Fan shall bear the AMCA Certified Ratings Seal for Sound and Air Performance. Construction: The fan shall be of bolted and welded construction utilizing corrosion resistant fasteners. The bearings and drives shall be mounted on a minimum 10 gauge welded steel power assembly. The motor shall be mounted to a minimum 14 gauge steel motor base welded to the outside of the minimum 14 gauge welded steel fan housing. Minimum 10 gauge adjustable motor plate shall utilize threaded studs for positive belt tensioning. The motor shall be protected by a minimum 16 gauge weather cover. The fan housing shall be continuously welded to a fan base with integral venturi and continuously welded curb cap corners. Fan shall have hinged butterfly discharge dampers of aluminum or steel construction with a rain gutter to prevent rain infiltration. The damper assembly shall be protected by a continuously welded steel windband of minimum 18 gauge steel with minimum one inch flanges for maximum strength and rigidity. Damper assembly shall be furnished with fusible links that melt at 165°F allowing dampers to open automatically when power is off. Dampers shall meet UL 793 snow load testing of butterfly dampers (10 lb/sqft). Unit shall be tested to operate at 500°F for 4 hours per IRI requirements and operate at 1000°F for 15 minutes per SBCCI requirements. Unit shall bear an engraved aluminum nameplate and shall be shipped in ISTA Certified Transit Tested Packaging.

Coating: All steel fan components shall be Lorenized® with an electrostatically applied, baked polyester powder coating. Each component shall be subject to a five stage environmentally friendly wash system, followed by a minimum 2 mil thick baked powder finish. Paint must exceed 1,000 hour salt spray under ASTM B117 test method.

Propeller: Propeller shall be a high-efficiency fabricated steel design with blades securely fastened to a minimum 7 gauge steel hub. The hub shall be keyed and locked to the fan shaft utilizing two setscrews or a taperlock bushing. Propeller shall be balanced in accordance with AMCA Standard 204-05, Balance Quality and Vibration Levels for Fans. Motor: Motor shall be Nema design B with class B insulation rated for continuous duty and furnished at the specified voltage, phase and enclosure.

Bearings: Bearings shall be designed and tested specifically for use in air handling applications. Construction shall be heavy duty regreasable ball type in a cast iron housing selected for a minimum L50 life in excess of 200,000 hours at maximum cataloged operating speed.

Belts and Drives: Belts shall be oil and heat resistant, static conducting. Drives shall be precision machined cast iron type, keyed and securely attached to the wheel and motor shafts. Drives shall be sized for 150% of the installed motor horsepower. The variable pitch motor drive must be factory set to the specified fan RPM.

Product: Fan shall be type TUBSC as manufactured by LOREN COOK COMPANY of Springfield, Missouri.

Dimensions (Inches)

AQB drawing
Size A Dia. B C D E T Sq. Max. Motor Frame Approx. Ship.
Wt. - lbs. Steel
Roof Opening Square*
20 27-1/4 18-1/8 47-3/4 2 16-13/16 32 184T 330 27-1/2
24 31-1/4 19-1/8 48-3/8 3 16-13/16 36 184T 380 31-1/2
30 37-1/4 23-5/8 54-1/8 3 16-1/16 42 254T 480 37-1/2
36 43-1/4 25-5/8 61-1/8 3 16-5/16 48 254T 570 43-1/2
42 49-1/4 27-7/8 64-9/16 3 17-7/16 54 254T 670 49-1/2
48 55-1/4 31-1/4 70-13/16 3 18-7/8 60 284T 780 55-1/2
54 61-1/4 35-1/4 79-1/4 3 20-7/8 66 284T 1030 61-1/2
60 67-1/4 36-1/2 83-3/4 3 20-7/8 72 284T 1260 67-1/2
72 79 44 98-13/16 3 22-15/16 84 284T 1620 79-1/2
All dimensions in inches. Shipping weights are less motor. * Roof opening size for curbs supplied by Cook only