22"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 7.75"h] rg1010 thanks to counter-sunk screw holes

thanks to counter-sunk screw holes and included screws

+ Product Details Size - 12"w X 22"h is the size for the duct opening measurement only

while the included installation screws make setup quick and hassle-free

actual front end outer dimensions are approximately 42 5/8" width X 22 5/8" height -

22"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 7.75"h] rg1010 thanks to counter-sunk screw holes+ Product Details Size 22"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 75" Width X 7. 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 wear