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

+ Product Details Size - 32"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 27 5/8" height -

please note that the total outer dimensions of the grille measure 10" in diameter

line-height: 1

Actual Filter Size – 17 3/4"w x 5 3/4" x 1"

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