28"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 25.75"h] Compatible With Duct 6in + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 18" or 18" x 10" duct opening (measured at the opening)

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+ Product Details Size – 26"w X 20"h is the size for the duct opening measurement only

allowing unrestricted airflow for optimal HVAC performance

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 28" or 28" x 10" duct opening (measured at the opening)

28"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 25.75"h] Compatible With Duct 6in + Product Details Perfect Fit+ Product Details Size 28"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 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