28"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 15.75"h] 8" Diameter Designed for a 1" thick

Designed for a 1" thick filter

actual front end outer dimensions are approximately 22 5/8" width X 52 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 6" duct openings

Slots are angled to diversify the airflow in 2 way direction

28"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 15.75"h] 8" Diameter Designed for a 1" thick+ Product Details Size 28"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 15. 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