8"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 15.75"h] w36h36 Ideal for Walls & Ceilings: 4 X 12 Is CRFG2028 Width_14in

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 6" or 6" x 8" duct opening (measured at the opening)

+ Product Details Size - 14"w X 18"h X 2"d (for duct opening measurement only)

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

+ Product Details Size – 6"w X 10"h is the size for the duct opening measurement only

8"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 9.75"w x 15.75"h] w36h36 Ideal for Walls & Ceilings: 4 X 12 Is CRFG2028 Width_14in Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings + Product Details Perfect Fit & Easy Sizing Designed for a 8" x 6" or 6" x 8" duct opening (measured at the opening)