8"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 25.75"h] Grille actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

our damper helps create a well-balanced indoor environment

actual front end outer dimensions are approximately 10 5/8" width X 28 5/8" height

actual front end outer dimensions are approximately 10 5/8" width X 20 5/8" height

8"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 25.75"h] Grille actual front end outer dimensions+ Product Details Size 8"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 9. 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 wear