GIV Gravity Operated Roof Ventilators intake fresh air utilizing the pressure difference between the outside and inside air. An efficient throat and hood design allows for high volumes of fresh air intake while minimizing the induced pressure drop. GIV ventilators come in a variety of square and rectangular throat areas, with throat lengths ranging from 12” to 120”.
- 2:1 ratio of hood opening to throat area
- Standard square throats
- For rectangular throats – consult factory
- Durable aluminum or galvanized construction
- 0.050” aluminum hood with 0.080” aluminum base
- Resists harshest of weather conditions
- Miter-cut & continuously welded curb cap corners
- Hood with snap-back seams, spot-weld secured
- Bird screen of ½” x ½” galvanized wire mesh
- Maximum 600 FPM intake velocity
- Throat lengths range from 12” to 120”
