Tidoin 12 in. Silver 940 CFM 1620 RPM High Speed Electric Power Gable Mount Shutter Exhaust Fan with Controller

This 12 in. shutter/exhaust fan with automatic Shutters can help replace your ac unit by cooling your garage, attic, greenhouse shop or chicken coop. Can easily be added to a window opening or opening in the wall along with a thermostat to optimize cooling. This industrial grade shutter fan can solve all of your cooling and ventilation needs.