22"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 31.75"h] 6" Round Duct Pipe Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 16" duct openings

actual front end outer dimensions are approximately 38 5/8" width X 34 5/8" height

+ Product Details Size - 26"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 20"h is the size for the duct opening measurement only

75" width X 7

22"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 31.75"h] 6" Round Duct Pipe Ideal for Walls & Ceilings:+ Product Details Size 22"w X 30"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 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