22"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 23.75"h] Color_Aluminum + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 6" OR 6" x 30" duct opening (measured at the opening)

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

+ Product Details Size – 25"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 24 5/8" height

+ Product Details Size - The listed 10" diameter refers specifically to the size of the duct opening

22"w X 22"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 23.75"h] Color_Aluminum + Product Details Perfect Fit+ Product Details Size 22"w X 22"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 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