14"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 9.75"h] Compatible with Duct 8" actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 16 5/8" height

actual front end outer dimensions are approximately 22" width X 16" height

+ Product Description This aluminum flex duct is intended to be used in heating

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Its locking eight-tumbler mechanism and supplied key safeguard your thermostat from tampering

14"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 15.75"w x 9.75"h] Compatible with Duct 8" actual front end outer dimensions+ Product Details Size 14"w X 8"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 15. 75" Width X 9. 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