24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w10h10 + Product Details Size -

+ Product Details Size - 18"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 8" duct openings

Rigid Built For External Use– The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the louvers

24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w10h10 + Product Details Size -+ Product Details Size 24"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 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