16"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 33.75"h] 8in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 28 5/8" height

+ Product Details Size – 24" x 28" or 28" x 24" 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 Heavy-Duty Steel Construction - Made from 20-gauge steel for superior strength and durability

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 28" or 28" x 10" duct opening (measured at the opening)

16"w X 32"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 33.75"h] 8in diameter actual front end outer dimensions+ Product Details Size 16"w X 32"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 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