30"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 21.75"h] 6" Diameter ensuring they don't overlap

ensuring they don't overlap

+ Product Details Size – 14" x 16" or 16" x 14" is the size for the duct opening measurement only

ceiling height)

and its seamless drop-in installation process ensures effortless setup

30"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 21.75"h] 6" Diameter ensuring they don't overlap+ Product Details Size 30"w X 20"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 31. 75" Width X 21. 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