34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Filter Grille Noise free components - No

Noise free components - No vibrating louvers etc

+ Product Details Size - 28"w X 16"h X 2"d (for duct opening measurement only)

+ Product Details Size – 12"w X 22"h is the size for the duct opening measurement only

75" width X 25

85" width X 11

34"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 31.75"h] Filter Grille Noise free components - No+ Product Details Size 34"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 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