28"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 37.75"h] w16h16 + Product Details Size –

+ Product Details Size – 4"w X 10"h or 10"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 16"w X 25"h is the size for the duct opening measurement only

Its linear bar design maximizes ventilation

+ Product Details Size – 16" x 28" or 28" x 16" is the size for the duct opening measurement only

production and finish on all products

28"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 29.75"w x 37.75"h] w16h16 + Product Details Size –+ Product Details Size 28"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 29. 75" Width X 37. 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