36"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 33.75"h] Compatible With Duct 10in actual front end outer dimensions

actual front end outer dimensions are approximately 15

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 28" or 28" x 6" duct opening (measured at the opening)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 6" duct openings

+ Product Details Size - 30"w X 16"h is the size for the duct opening measurement only

36"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 33.75"h] Compatible With Duct 10in actual front end outer dimensions+ Product Details Size 36"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 33. 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