Rough Opening Size : 8 In L X 16 In W Material : Polypropylene Finish : Black Oxide Width : 15-1/4 In Depth : 7-3/4 In Suitable For : Standard Block Foundation Opening
Grill Type : Mesh Net Free Ventilating Area : 62 Sq-in Rough Opening Size : 8 In L X 16 In W Material : Thermoplastic Finish : Black Oxide Suitable For : Concrete Block Opening
Grill Type : Mesh Net Free Ventilating Area : 65 Sq-in Rough Opening Size : 8 In L X 16 In W Material : Thermoplastic Finish : Black Oxide Suitable For : Standard Vent Openings