34"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 9.75"h] Brown 75"H – fits a 24"

75"H – fits a 24" X 4" duct opening

+ Product Details Size - 22"w X 26"h is the size for the duct opening measurement only

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

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+ Product Details Size - 18"w X 14"h X 2"d (for duct opening measurement only)

34"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 9.75"h] Brown 75"H – fits a 24"+ Product Details Size 34"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 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