26"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 37.75"h] 10in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

75"H – fits a 6" X 4" duct opening

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 6" OR 6" X 18" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 14" or 14" x 6" duct opening (measured at the opening)

26"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 37.75"h] 10in diameter actual front end outer dimensions+ Product Details Size 26"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 37. 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