26"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 19.75"h] Compatible with Duct 6" accordion dt { margin-bottom: 10px

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with actual outer dimensions of 10

these louvers provide exceptional protection against rain and water

Actual Front End Outer Dimensions Are 7

26"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 19.75"h] Compatible with Duct 6" accordion dt { margin-bottom: 10px+ Product Details Size 26"w X 18"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 19. 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