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

+ Product Details Size – 14"w X 30"h is the size for the duct opening measurement only

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at predicted low air motion 35 fpm in the zone of occupancy

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 4" duct openings

actual front end outer dimensions are approximately 34 5/8" width X 26 5/8" height

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