10"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 25.75"h] w6h6 + Product Details Size -

+ Product Details Size - 28"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 14"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 22" or 22" x 6" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening)

actual front end outer dimensions are approximately 18 5/8" width X 20 5/8" height

10"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 25.75"h] w6h6 + Product Details Size -+ Product Details Size 10"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 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