36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 31.75"h] Copper Coil 75" Width X 15

75" Width X 15

Heavy Gauge Steel

+ Product Details Size – 18" x 20" or 20" x 18" is the size for the duct opening measurement only

+ Product Details Size - 34"w X 10"h X 2"d (for duct opening measurement only)

36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 31.75"h] Copper Coil 75" Width X 15+ Product Details Size 36"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 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