24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w10h10 75"H – fits a 20"

75"H – fits a 20" X 6" duct opening

Actual Filter Size – 7 3/4"w x 23 3/4" x 1"

Rigid Built For External Use– The sturdy and rigid design features noise free components that eliminates vibration and excess noise to the louvers

actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

+ Product Details Size - 12"w X 30"h is the size for the duct opening measurement only

24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 25.75"w x 25.75"h] w10h10 75"H – fits a 20"+ Product Details Size 24"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 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