24"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 35.75"h] Color_Anodized Aluminum + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 30" OR 30" x 18" duct opening (measured at the opening)

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Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 12" duct openings

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

24"w X 34"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 35.75"h] Color_Anodized Aluminum + Product Details Perfect Fit+ Product Details Size 24"w X 34"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 35. 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