30° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable Grey hp-birdscreen-close { position: absolute

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 30" OR 30" x 32" duct opening (measured at the opening)

+ Product Details Size - 16"W X 6"H is (for duct opening measurement only)

30° Thinline Outdoor Louver Gable Vent (Wide Frame) - Customizable Grey hp-birdscreen-close { position: absoluteOur 30 Thinline Aluminum Louver Vent Exterior Air Grille for Walls, Gables & Crawlspaces is Weather Resistant with a Wide Flange Frame. Features Wide flange for additional mounting surface coverage Fixed 30 horizontal blades on 3 4" spacing Fully extruded aluminum blades and frame Supports are hidden behind blades for a clean appearance Bird screen is standard or optional insect screen Available in 1" standard dimension increments Custom sizes