91国产偷拍

Intake Gravity Ventilators

The gravity intake ventilators are non-powered and work on pressure differential between the inside and outside of the building.

OVERVIEW

FGI

Gravity ventilators designed for intake applications with natural gravity or negative pressure systems. Units feature a low silhouette, fabra hood style housing.

  • 0 to 109,800 cfm
  • Up to 0.35 in. wg.
Purchase Options:

GRSI/GRSF

The GRSI is a spun aluminum air relief roof ventilator for natural gravity or positive pressure systems. This model can mount either to a roof curb or with a flashing flange (GRSF) for quick and easy installations.

  • 180 to 15,200 cfm
  • Up to 0.4 in. wg.