16"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 15.75"h] 6in diameter + Product Details Size -

+ Product Details Size - 22"w X 20"h is the size for the duct opening measurement only

background-color: #000

Actual Filter Size – 17 3/4"w x 15 3/4" x 1"

our Circular Air Supply Valves are ideal for low and medium pressure ventilation air conditioning systems

This Will Create A Cycle Of In And Out Air FLow

16"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 15.75"h] 6in diameter + Product Details Size -+ Product Details Size 16"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 15. 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