32"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 13.75"h] Material_Aluminum + Product Details Size –

+ Product Details Size – 8" x 18" or 18" x 8" is the size for the duct opening measurement only

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

+ Product Details Size - 36"w X 8"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 34" OR 34" X 16" duct opening (measured at the opening)

75" Width X 35

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