24"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 27.75"h] 10" Diameter actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 28 5/8" width X 30 5/8" height

+ Product Details Size - 25"w X 8"h is the size for the duct opening measurement only

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

Perfect for sidewall or ceiling installation

actual front end outer dimensions are approximately 30 5/8" width X 14 5/8" height

24"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 25.75"w x 27.75"h] 10" Diameter actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 28 5 8" width X 30 5 8" height + Product Details Size 25"w X 8"h is the size for the duct opening measurement only