26"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 21.75"h] w32h32 12" Diameter Is The Size

12" Diameter Is The Size For The Duct Opening Measurement Only

actual front end outer dimensions are 22" width X 6" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening)

1/2" - 3119 PSI

75"H – fits a 12" X 12" duct opening

26"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 27.75"w x 21.75"h] w32h32 12" Diameter Is The Size+ Product Details Size 26"w X 20"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 27. 75" Width X 21. 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