12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 31.75"h] Material_Steel + Product Details Size –

+ Product Details Size – 36"w X 18"h is the size for the duct opening measurement only

1-1/8" - 2334 PSI

Quality Packaging – carefully shrink wrapped with cardboard backing to prevent damage in shipment

+ Product Details Size - 30"w X 22"h is the size for the duct opening measurement only

ensuring they don't overlap

12"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 31.75"h] Material_Steel + Product Details Size –+ Product Details Size 12"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 31. 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