Spun Aluminum Gravity Ventilator with Flashing Flange, Size 12, Model GRSF-12
For natural gravity or positive pressure systems, model GRSF offers excellent performance and durability for intake or relief applications. Featuring an exceptional low silhouette design and rugged construction this model is both efficient and economical. Features: All aluminum exterior for corrosion-resistant construction, Integral birdscreen to prevent entry of birds and small objects, Built-in flashing flange with prepunched mounting holes for quick and easy installations without a roof curb
