10"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 25.75"h] w12h12 Example: If your hole is

Example: If your hole is 20" wide by 14" tall

the actual front end outer dimensions are 6" in diameter

This grille is ideal for both sidewall and ceiling installations

High Quality Copper Coil Meets/Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 - 99

Measure the size of the air duct/drywall opening

10"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 25.75"h] w12h12 Example: If your hole is+ Product Details Size 10"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 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