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] Aluminum Adjustable Curved Blade Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

High quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

When it's time to upgrade your HVAC Vents in your house

the actual front end outer dimensions are 6" in diameter

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] Aluminum Adjustable Curved Blade Actual Filter Size – 29+ 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