Variable Fan Speed Controller
Increase the versitility of any inline fan with a Variable Fan Speed Controller. A speed controller will reduce wear and tear on the internal workings of an inline fan as well as reduce the wind noise of the fan itself. Also a speed controller can be used to extend the life of a carbon filter by reducing the fan's speed. The unit is also ideal for adjusting a grow area's ventilation to compensate for outside temperature, low speed is preferable for colder months, high speed for warmer months.