36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 31.75"h] 12in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height -

actual front end outer dimensions are approximately 27 5/8" width X 24 5/8" height

+ Product Details Size - 32"w X 22"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are 11

+ Product Details Size – 30" x 34" or 34" x 30" is the size for the duct opening measurement only

36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 31.75"h] 12in diameter actual front end outer dimensions+ Product Details Size 36"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 31. 75" Height Weather and Pest Proof These louvers are especially designed to prevent water from entering your home, and with a built in back 1 2" mesh they also protect you from annoying rodents like mice, rats, birds, and squirrels High Quality Aluminum The premium durable aluminum will never rust and it will never