12"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 17.75"h] Return + Product Details Size -

+ Product Details Size - 12"w X 36"h is the size for the duct opening measurement only

Say goodbye to pest-related worries as the built-in back 1/2" mesh acts as a barrier against unwanted rodents like mice

Easy Installation – Complete set of sponge gasket and mounting frame included

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 10" OR 10" x 24" duct opening (measured at the opening)

Equipped with a lever for easy airflow adjustment and dampening

12"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 13.75"w x 17.75"h] Return + Product Details Size -+ Product Details Size 12"w X 16"h X 2"d (for duct opening measurement only); actual front end outer dimensions are 13. 75" Width X 17. 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