24"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 23.75"h] with filter Design – Multi-shutter damper with

Design – Multi-shutter damper with handle lever for easy opening and closing - screws included

Ideal for Walls & Ceilings: Designed for seamless installation in standard 8" X 4" duct openings

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 18" duct openings

this guard fits almost any thermostat and blends seamlessly into any setting

+ Product Details Size – 20"w X 30"h is the size for the duct opening measurement only

24"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 25.75"w x 23.75"h] with filter Design – Multi-shutter damper with+ Product Details Size 24"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 25. 75" Width X 23. 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