16"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 23.75"h] 10" Diameter + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 32"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 31 5/8" width X 24 5/8" height -

+ Product Details Size – 16"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 14"w X 4"h is the size for the duct opening measurement only

[Outer Dimensions: 20

16"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 17.75"w x 23.75"h] 10" Diameter + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 32"w X 26"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 31 5 8" width X 24 5 8" height