34"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 11.75"h] 10in diameter + Product Details Size -

+ Product Details Size - 16"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size – 32"w X 24"h is the size for the duct opening measurement only

75"H – fits a 20" X 12" duct opening

Actual Filter Size – 29 3/4"w x 29 3/4" x 1"

34"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 11.75"h] 10in diameter + Product Details Size -+ Product Details Size 34"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 11. 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