16"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 7.75"h] w20h20 Choose from a palette of

Choose from a palette of four elegant colors – white

With a 6" diameter for the duct opening measurement

Actual Filter Size – 17 3/4"w x 31 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening)

16"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 7.75"h] w20h20 Choose from a palette of+ Product Details Size 16"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 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