2" Non-Drainable Outdoor Louver Gable Vent (Flange Frame) - Customizable Brown + Product Details Size -

+ Product Details Size - 4"w X 18"h is the size for the duct opening measurement only

Chemical Composition: 5% Silver - 6% Phosphorus - 89% Copper - Brazing Temperature: Solidus Temperature: 1190°F - Liquidus Temperature: 1460°F

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

10 Reinforced Inside Pockets - 41 Bolstered Outside Pockets - 10 Webbing Loops

2" Non-Drainable Outdoor Louver Gable Vent (Flange Frame) - Customizable Brown + Product Details Size -Our 2" Aluminum Louver Vent Exterior Air Grille for Walls, Gables & Crawlspaces is Weather Resistant with a Flange Frame. It has blades that prevent water penetration and maximize free area. Features Heavy duty, extruded aluminum flange frame. Fixed, non drainable blades on 2" spacing. J blade design minimizes water ingress while maximizing free area. Nominal 43% free area, based on 48" x 48" louver. Mullions used for sizes over 36" in length.