14"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 25.75"h] return grille + Product Details Size -

+ Product Details Size - 12"w X 14"h X 2"d (for duct opening measurement only)

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 4"w X 14"h is the size for the duct opening measurement only

pair it with our butterfly dampers

Superior Airflow Control: Built-in damper lets you control how much air enters your room

14"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 25.75"h] return grille + Product Details Size -+ Product Details Size 14"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 75" Width X 25. 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