36"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 23.75"h] Insulated Line Set + Product Details Size -

+ Product Details Size - 12"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 16"h X 2"d (for duct opening measurement only)

75" Width X 29

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36"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 23.75"h] Insulated Line Set + Product Details Size -+ Product Details Size 36"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 37. 75" Width X 23. 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