10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 11.75"w x 11.75"h] Black actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 18 5/8" height

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 8"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 14" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

10"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 11.75"w x 11.75"h] Black actual front end outer dimensions+ Product Details Size 10"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 11. 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