45° Thinline Outdoor Louver Gable Vent (Channel Frame) - Customizable Insulated Line actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 20 5/8" height

See chart below:

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 26" or 26" x 6" duct opening (measured at the opening)

45° Thinline Outdoor Louver Gable Vent (Channel Frame) - Customizable Insulated Line actual front end outer dimensionsOur 45 Thinline Aluminum Louver Vent Exterior Air Grille for Walls, Gables & Crawlspaces is Weather Resistant with a Channel Frame. Features Fixed 45 horizontal blades on 3 4" spacing. Fully extruded aluminum blades and channel 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 manufactured up to 1 16" increments. Mounting