6"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 15.75"h] w22h22 with actual outer dimensions of

with actual outer dimensions of 18

+ Product Details Size - 18"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 6" x 16" or 16" x 6" is the size for the duct opening measurement only

+ Product Details Size – 12" x 14" or 14" x 12" is the size for the duct opening measurement only

6"w X 14"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 7.75"w x 15.75"h] w22h22 with actual outer dimensions of+ Product Details Size 6"w X 14"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 7. 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 wear