6"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 7.75"w x 7.75"h] w22h22 Universal size

Universal size

For 8" Round Duct Opening - Spiral or Flex

With precise measurements for seamless integration

actual front end outer dimensions are approximately 22 5/8" width X 22 5/8" height

6"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 7.75"w x 7.75"h] w22h22 Universal size+ Product Details Size 6"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 7. 75" Width X 7. 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