22"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 7.75"h] w36h36 actual front end outer dimensions

actual front end outer dimensions are approximately 36 5/8" width X 26 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 24" OR 24" x 28" duct opening (measured at the opening)

this filter grille never rusts and withstands long-term use in any environment

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

actual front end outer dimensions are approximately 10 5/8" width X 10 5/8" height

22"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 7.75"h] w36h36 actual front end outer dimensions+ Product Details Size 22"w X 6"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 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