34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] 10in diameter + Product Details Size –

+ Product Details Size – 22"w X 20"h is the size for the duct opening measurement only

making it an ideal choice for both residential and commercial settings

Designed with individually adjustable curved blades

actual front end outer dimensions are 19" Width X 19" Height

+ Product Details Size – 28" x 32" or 32" x 28" is the size for the duct opening measurement only

34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] 10in diameter + Product Details Size –+ Product Details Size 34"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 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