8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 9.75"w x 17.75"h] w24h24 Heavier gauge than needed

Heavier gauge than needed

actual front end outer dimensions are approximately 20 5/8" width X 34 5/8" height

Equipped with a lever for easy airflow adjustment and dampening

Please check the measuring guide to ensure a proper fit

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 8" duct openings

8"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 9.75"w x 17.75"h] w24h24 Heavier gauge than needed+ Product Details Size 8"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 75" Width X 17. 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 wear