34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Filter Grille 14"w X 3"h Is The

14"w X 3"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 25"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 24"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 4" duct openings

and lay it flat in the grid

34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Filter Grille 14"w X 3"h Is The+ Product Details Size 34"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 31. 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