30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 29.75"h] w24h24 + Product Details Size -

+ Product Details Size - 36"w X 34"h X 2"d (for duct opening measurement only)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 8" duct openings

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 34" OR 34" x 24" duct opening (measured at the opening)

+ Product Details Size – 34"w X 36"h is the size for the duct opening measurement only

30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 29.75"h] w24h24 + Product Details Size -+ Product Details Size 30"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 29. 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