Gravity Ventilators

A family of units designed for natural gravity ventilation. ASHRAE guidelines for indoor air quality require some amount of fresh be provided by natural or gravity ventilation. Additional gravity units are used in application to balance the pressure within building either due to wind pressure or through thermal buoyancy.

GI/GR

Miami Dade High Wind

Relative cost – $$
Throat size range – 12 x 12 to 72 x 144
Available for both intake and relief

PR

Relative cost – $
Throat size range – Ø8 to Ø48
Primary used for relief applications

TR

Relative cost – $
Throat size range – Ø8 to Ø48
Primary used for intake applications

TRE

Relative cost – $$$$
Throat size range – 12 x 12 to 60 x 120, height range – 2 to 20
For larger units consult factory
Used for both intake and relief

LUG

Relative cost – $$$
Throat size range – Ø24 to Ø60
Used in high volume relief applications