34"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 11.75"h] fixed bar 75"H – fits a 10"

75"H – fits a 10" x 8" duct opening

+ Product Details Size - 14"w X 20"h is the size for the duct opening measurement only

The process is intuitive: simply select the appropriate ceiling square for your grill

The ring base allows installation without removing the thermostat

34"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 11.75"h] fixed bar 75"H – fits a 10"+ Product Details Size 34"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 11. 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