14"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 7.75"h] 10" Diameter + Product Details Size –

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

+ Product Details Size - 8"w X 22"h X 2"d (for duct opening measurement only)

Our galvanized duct elbow boot is made of high-quality galvanized sheet metal with crimped ends (snap-lock design) for easy fitting and secure connection

+ Product Details Size - 22"w X 18"h X 2"d (for duct opening measurement only)

14"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 7.75"h] 10" Diameter + Product Details Size –+ Product Details Size 14"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 75" Width X 7. 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 wear