10"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 17.75"h] Aluminum - Cube Core each diffuser is carefully shrink-wrapped

each diffuser is carefully shrink-wrapped with a sturdy cardboard backing

+ Product Details Size – 4"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 12 5/8" height -

75" Width X 23

high-impact plastic

10"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 17.75"h] Aluminum - Cube Core each diffuser is carefully shrink-wrapped+ Product Details Size 10"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 17. 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