18"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 23.75"h] Color_Red Oak Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 6" X 6" duct openings

actual front end outer dimensions are approximately 9

Multi Angled Fan Pattern Fins For Multi Directional AIr Distribution Throughout The Entire Room

If your hole is 14" wide by 20" tall

actual front end outer dimensions are approximately 26 5/8" width X 30 5/8" height

18"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 23.75"h] Color_Red Oak Ideal for Walls & Ceilings:+ Product Details Size 18"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 19. 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