10"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 17.75"h] 6in diameter + Product Details Size –

+ Product Details Size – 2"w X 12"h or 12"w X 2"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 16"h X 2"d (for duct opening measurement only)

Its heavier gauge construction guarantees durability and longevity

Filter Size - 25

Actual Filter Size – 31 3/4"w x 29 3/4" x 1"

10"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 17.75"h] 6in diameter + Product Details Size –+ Product Details Size 10"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 17. 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