Construction Metals 18 in. Galvanized Steel Round Gable Vent with Front Flange

Gable Louvers help provide attic ventilation to exhaust unwanted heat and moisture which can damage wood or roofing materials. A balanced ventilation system (50% intake ventilation combined with 50% exhaust ventilation) can also lower utility bills. Conforms to Federal Specification QQ-5775A, Type 1, Class 4 ASTM A-653- meets FHA codes. 28-Gauge galvanized steel, 1-piece construction with a 2 in. thick frame. 1/4 in. Galvanized wire mesh prevents entry from birds or large insects.