22"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 11.75"h] Black + Product Details Size -

+ Product Details Size - 36"w X 28"h is the size for the duct opening measurement only

to Ensure Perfect Smooth Finish

actual front end outer dimensions are approximately 35

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 8" or 8" x 10" duct opening (measured at the opening)

Design – Unrestricted airflow For Your HVAC system - noise free components - no vibrating louvers etc

22"w X 10"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 11.75"h] Black + Product Details Size -+ Product Details Size 22"w X 10"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 23. 75" Width X 11. 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