16"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 25.75"h] 3-Way or 4-Way 85" width X 21

85" width X 21

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 22" or 22" x 12" duct opening (measured at the opening)

+ Product Details Size – 14"w X 12"h is the size for the duct opening measurement only

line-height: 22px

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 22" OR 22" x 28" duct opening (measured at the opening)

16"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 25.75"h] 3-Way or 4-Way 85" width X 21+ Product Details Size 16"w X 24"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 17. 75" Width X 25. 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