16"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 27.75"h] w28h28 + Product Details Size –

+ Product Details Size – 6" x 8" or 8" x 6" is the size for the duct opening measurement only

875" width X 18" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 10" OR 10" x 32" duct opening (measured at the opening)

+ Product Details Size - 10"w X 14"h X 2"d (for duct opening measurement only)

16"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 27.75"h] w28h28 + Product Details Size –+ Product Details Size 16"w X 26"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 27. 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