18"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 29.75"h] Color_R-4.2 Yellow actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 14 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 30" X 6" duct openings

+ Product Details Size – 30"w X 24"h is the size for the duct opening measurement only

Easy Installation: Comes with mounting screws for a secure fit in minutes

18"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 29.75"h] Color_R-4.2 Yellow actual front end outer dimensions+ Product Details Size 18"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 29. 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