24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 25.75"w x 25.75"h] Filter Grille + Product Details Size -

+ Product Details Size - 12"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size – 28" x 30 or 30" x 28" is the size for the duct opening measurement only

of up to 300m3/h

+ Product Details Size - 10"w X 18"h X 2"d (for duct opening measurement only)

actual front end outer dimensions are approximately 16 5/8" width X 30 5/8" height

24"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 25.75"w x 25.75"h] Filter Grille + Product Details Size -+ 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