22"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 37.75"h] 6" Round Duct Pipe + How To Measure A

+ How To Measure A Grille Before You Buy Overall Size:

Actual Filter Size – 31 3/4"w x 29 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 22" or 22" x 8" duct opening (measured at the opening)

With precise measurements for seamless integration

22"w X 36"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 37.75"h] 6" Round Duct Pipe + How To Measure A+ Product Details Size 22"w X 36"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 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