16"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 29.75"h] Powder-Coat Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 8" duct openings

Crafted from robust 20-gauge steel

100% Satisfaction Guaranteed

Actual Filter Size – 31 3/4"w x 21 3/4" x 1"

16"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 29.75"h] Powder-Coat Ideal for Walls & Ceilings:+ Product Details Size 16"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 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