22"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 29.75"h] 12in diameter + Product Details Size -

+ Product Details Size - 34"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 35 3/4" x 1"

875" width X 6" height

Actual Filter Size – 7 3/4"w x 15 3/4" x 1"

Pressure Rating: 2100 to 7000 PSI

22"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 29.75"h] 12in diameter + Product Details Size -+ Product Details Size 22"w X 28"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 75" Width X 29. 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