12 Inch Automatic Gravity Shutter Louver Vent – For Attics, Greenhouses & More
Why Choose Our Automatic Gravity Shutter Louver Vent?. Item Width: Exhaust Louver Vent Model: Exhaust Louver Vent Shape: Square. Efficient Automatic Gravity Operation: Automatically opens and closes with airflow, ensuring optimal ventilation while keeping out dust, pests, and storms.