14"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 35.75"h] 18" Round Duct Pipe The unique sponge gasket ensures

The unique sponge gasket ensures an airtight seal

+ Product Details Size - 30"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 14"w X 20"h is the size for the duct opening measurement only

high-impact plastic

+ Product Details Size – 12"w X 20"h is the size for the duct opening measurement only

14"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 35.75"h] 18" Round Duct Pipe The unique sponge gasket ensures+ Product Details Size 14"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 75" Width X 35. 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