10"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 33.75"h] Width_20in + Product Details Size -

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 10"h is the size for the duct opening measurement only

these louvers are built to last

75" width X 19

And The Cooler Air From Outside WIll Flow In From The Bottom

10"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 33.75"h] Width_20in + Product Details Size -+ Product Details Size 10"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 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