16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 9.75"h] w25h25 actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 18 5/8" height

+ Product Details Size - 18"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size – 25"w X 28"h is the size for the duct opening measurement only

All steel wire is applied between PET surfaces to prevent corrosion (oxidization)

16"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 9.75"h] w25h25 actual front end outer dimensions+ Product Details Size 16"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 9. 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