24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 25.75"w x 37.75"h] Aluminum Bar 75"H – fits a 18"

75"H – fits a 18" X 8" duct opening

With plain ends

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 14" OR 14" x 24" duct opening (measured at the opening)

24"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 25.75"w x 37.75"h] Aluminum Bar 75"H – fits a 18"+ Product Details Size 24"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 37. 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