Counter balances or counter weights are commonly used the automatic door closing mechanism of commercial refrigerators and freezers, and product merchandisers. Most commonly, equipment utilizing a counterbalance will feature a sliding door. The function of the counterbalance is to enable the weight to close the door under the natural force of gravity. Similarly, counterwieghts may be used to keep a mechanism in balance as in a scale, or to assist in moving another part of the equipment as in an assisted lifting mechanism.