12"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 33.75"h] Color_Red Oak Actual Front End Outer Dimensions

Actual Front End Outer Dimensions Are 14" Diameter

+ Product Details Size - 34"w X 20"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 16" or 16" x 10" duct opening (measured at the opening)

+ Product Details Size - 8" X 8" is the size for the duct opening measurement only

+ Product Details Size – 8" round duct opening

12"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 33.75"h] Color_Red Oak Actual Front End Outer Dimensions+ Product Details Size 12"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 33. 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