Gravity Intake and Relief Ventilators
The Gravity Intake and Relief ventilators are non-powered and work on pressure differential between the inside and outside of the building.Models FHI/FHR
The FHI (intake) and FHR (relief) have the low silhouette Fabra Hood
design. In appearance, load bearing strength, weather resistance and
dimensional flexibility, the Fabra Hood design is superior.
Models GRS/WIH/WRH
The GRS has a spun aluminum housing. The WIH (intake) and WRH (relief) have a low silhouette louvered penthouse design. This design affords lower pressure drops while maintaining low hood heights.
Models RGU
The RGU gravity upblast ventilator is designed for use as a weatherproof outlet on vertical high velocity exhaust systems
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