26"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 37.75"h] w24h24 + Product Details Size -

+ Product Details Size - 8"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 10"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

Actual Filter Size – 23 3/4"w x 15 3/4" x 1"

Actual Filter Size – 15 3/4"w x 21 3/4" x 1"

26"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 37.75"h] w24h24 + Product Details Size -+ Product Details Size 26"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 37. 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