With the weight in the middle of the bag, this bag will self clean when the power unit is turned off. While vacuuming, the bag with the weight in it gets sucked up into the main canister created a cone shape with the BEAM filter. When the power is turned off, the filter is pulled down by the weight, loosing and shaking itself off.
A central vacuum system utilizing a permanent drop down filter bag is the most common type of central vacuum unit. The 110347 filter is intended to be permanent and only replaced if it has a tear or hole in it. If you notice that your vacuum has had a significant drop in suction, the drop in power can be caused by this filter being clogged up with fine dust particles. This generally takes a long time.