16"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 17.75"h] w10h10 you can attain the diameter

you can attain the diameter of the vent

+ Product Details Size - 16"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 22"w X 30"h is the size for the duct opening measurement only

+ Product Description The Clear Plastic Thermostat Guard is designed to provide secure protection for your thermostat while maintaining an attractive

The total outer size of this grille is the listed size plus 1

16"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 17.75"h] w10h10 you can attain the diameter+ Product Details Size 16"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 17. 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