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] ceiling + Product Details Size -

+ Product Details Size - 18"w X 8"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 26" duct opening (measured at the opening)

Experience noise-free airflow and a healthier environment thanks to our grille's innovative design

actual front end outer dimensions are approximately 32 5/8" width X 8 5/8" height

High quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

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] ceiling + 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