14"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 17.75"h] Color_R-4.2 Yellow + Product Details Size –

+ Product Details Size – 18" x 26" or 26" x 18" is the size for the duct opening measurement only

+ Product Details Size - 20"w X 8"h X 2"d (for duct opening measurement only)

with actual outer dimensions of 14

+ Product Details Size – 6"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 24"h is the size for the duct opening measurement only

14"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 17.75"h] Color_R-4.2 Yellow + Product Details Size –+ Product Details Size 14"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 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