Air Vent #SLAWH #85285 Slant Back Roof Vent, Aluminum, White, 50 sq in, 6-Pcs BRAND NEW! THE BOX WAS OPENED AND INSPECTED. NOTE: PLEASE CHECK PICTURES #3 #4 BEFORE BUYING. THE BASE IS SUPER BENDABLE BASED ON YOUR DESIRED. Large flange for easy installation One-piece design is weather tight and adds strength 3/12 To 12/12 Roof Pitch It has 50 sq. in. of net free area and has a 9'' in. diameter opening. These covered openings allow air to escape the attic. several of these vents are usually required to properly ventilate the attic. they should be placed evenly across the roof. choose from metal or plastic in round, square or slant-back designs. Height 4.12 Length 18.75 Width 16.00 Color/Finish Family White ECCN EAR99 Manufacturer Color/Finish WHITE NFA/Net Free Area (sq. in.) 50 Roof Louver Type Slant Back Rough Opening Length (In.) 8 Rough Opening Width (In.) 8 Vent Material Aluminum Country Origin Code US