![](/images/flag/s/en.gif)
Included in the box are 4 wheels, a handle and screws to install the wheels and handle. You will need a 1/4” nut driver and a Phillips screw driver. The unit has a low/off/high switch located on the backside of the unit. As each home has differences of size, occupancy, location, infiltration rates and homeowner needs, it is hard to estimate when the collectors will need to be changed. Because of the way air moves through the TFPC, the collectors are divided into 3 separate sections. Collectors