10"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 13.75"h] w28h28 /* Adding space between bullet

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Rigid gauge built for durability and long life in mind

+ Product Details Size - 10"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 16 5/8" height

+ Product Details Size – 22" x 32" or 32" x 22" is the size for the duct opening measurement only

10"w X 12"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 11.75"w x 13.75"h] w28h28 /* Adding space between bullet+ Product Details Size 10"w X 12"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 11. 75" Width X 13. 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