18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] w20h20 actual front end outer dimensions

actual front end outer dimensions are approximately 36 5/8" width X 8 5/8" height

High Quality – No sharp surface edges

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 6"h X 2"d (for duct opening measurement only)

18"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 35.75"h] w20h20 actual front end outer dimensions+ Product Details Size 18"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 35. 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