10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 11.75"w x 11.75"h] Grilles High Quality – Commercial grade

High Quality – Commercial grade aluminum - will never rust - designed for warehouses

75" Width X 13

actual front end outer dimensions are approximately 2" wider

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 10" OR 10" X 18" duct opening (measured at the opening)

actual front end outer dimensions are approximately 32 5/8" width X 12 5/8" height

10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 11.75"w x 11.75"h] Grilles High Quality – Commercial grade+ Product Details Size 10"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 11. 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