10"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 33.75"h] Filter Grille + Product Details Size -

+ Product Details Size - 28"w X 30"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 4" duct openings

+ Product Details Size – 16" x 28" or 28" x 16" is the size for the duct opening measurement only

875" width X 16" height

10"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 33.75"h] Filter Grille + Product Details Size -+ Product Details Size 10"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 33. 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