24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 31.75"h] Compatible with Duct 8" scratch-resistant surface that gleams like

scratch-resistant surface that gleams like it's just been waxed

only measure the "hole" in the wall/duct

+ Product Details Size – 20"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 14 5/8" width X 20 5/8" height

+ Product Details Size – 16" x 22" or 22" x 16" is the size for the duct opening measurement only

24"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 31.75"h] Compatible with Duct 8" scratch-resistant surface that gleams like+ Product Details Size 24"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 31. 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