10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 11.75"w x 11.75"h] Material_Aluminum + Product Details Size - Actual Filter Size 25 AD-S-230-10x10 Width_8in

+ Product Details Size - 22"w X 14"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)

+ Product Details Size – 26" x 36" or 36" x 26" is the size for the duct opening measurement only

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 30" or 30" x 6" duct opening (measured at the opening)

10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Brown [Outer Dimensions 11.75"w x 11.75"h] Material_Aluminum + Product Details Size Actual Filter Size 25 AD S 230 10x10 Width_8in + Product Details Size 22"w X 14"h is the size for the duct opening measurement only + Product Details Perfect Fit & Easy Sizing Designed for a 10" x 6" or 6" x 10" duct opening (measured at the opening)