622884 Construction Metals Inc GLFF1212WH 12 x 12, Pre-Painted White Finish, Gable Louver, 28 Gauge Galvanized Steel, 1 Piece Construction With A 2 Thick Frame, 1/4 Galvanized Wire Mesh, 63 SQIN Net Free Vent Area, Ventilates 131 SQFT, Rough Opening: 12-1/4 x 12-1/4, Nailing Flange At Front For Retro Or Siding Applications, Conforms To Federal Spec QQ-5775A, Type 1, Class 4 ASTM A-527 Meets FHA Codes.