30"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 11.75"h] w14h14 actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 22 5/8" width X 34 5/8" height -

+ Product Details Size - 24"w X 16"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 22 5/8" width X 20 5/8" height -

10" Diameter Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 22"w X 18"h is the size for the duct opening measurement only

30"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 11.75"h] w14h14 actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 22 5 8" width X 34 5 8" height + Product Details Size 24"w X 16"h X 2"d (for duct opening measurement only)