34"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 9.75"h] Compatible with Duct 6" 85" width X 9

85" width X 9

+ Product Details Size – 10"w X 30"h is the size for the duct opening measurement only

Rigid gauge built for durability and long life in mind

actual front end outer dimensions are approximately 16 5/8" width X 26 5/8" height -

+ Product Details Size - 10"w X 36"h X 2"d (for duct opening measurement only)

34"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 35.75"w x 9.75"h] Compatible with Duct 6" 85" width X 9+ Product Details Size 34"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 35. 75" Width X 9. 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 wear