30"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 25.75"h] Color_R-4.2 Yellow actual front end outer dimensions

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

actual front end outer dimensions are approximately 26 5/8" width X 22 5/8" height

of up to 300m3/h

+ Product Details Size – 16"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 28 5/8" width X 26 5/8" height

30"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 25.75"h] Color_R-4.2 Yellow actual front end outer dimensions+ Product Details Size 30"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 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