18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 19.75"w x 25.75"h] w24h24 + Product Details Heavy-Duty Steel

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior strength and durability

Durable and Long-Lasting – Built with high-impact clear plastic and premium materials for dependable performance

Design – Individually adjusting curved blades

Actual Filter Size – 21 3/4"w x 29 3/4" x 1"

Quality Packaging – carefully shrink wrapped with cardboard backing to prevent damage in shipment

18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 19.75"w x 25.75"h] w24h24 + Product Details Heavy-Duty Steel+ Product Details Size 18"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 75" Width X 25. 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