12"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 27.75"h] w26h26 actual front end outer dimensions MFFG410-1 w6h6 actual front end outer

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

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

+ Product Details Size – 30"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 24 5/8" width X 28 5/8" height

12"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 13.75"w x 27.75"h] w26h26 actual front end outer dimensions MFFG410 1 w6h6 actual front end outer actual front end outer dimensions are approximately 26 5 8" width X 10 5 8" height + Product Details Size 14"w X 22"h is the size for the duct opening measurement only