Ventamatic Cool Attic Galvanized Steel, Aluminum Louvers 22 In. W x 22 In. H x 3 In. D Automatic Automatic Gable Shutter basket Effortless vacuuming of larger areas

Effortless vacuuming of larger areas with 33 ft operating radius

All hangers in this series have double shear nailing - an innovation that distributes the load through 2 points on each joist nail for greater strength

Has more puncture-resistance and elasticity than conventional 4 mil

heavy-duty cover

Rigorous quality testing ensures secure encryption to prevent hacking and extreme 800-ft

Ventamatic Cool Attic Galvanized Steel, Aluminum Louvers 22 In. W x 22 In. H x 3 In. D Automatic Automatic Gable Shutter basket Effortless vacuuming of larger areasHigh impact, galvanized steel frame, felt padded 0. 020 gauge aluminum louvers for ultra quiet operation. Louvers open automatically when ventilator is operating. When ventilator turns off, louvers close to keep out insects, rain, and dust. Pre assembled for easy installation.