non metallic material and holds the cabinet during assembly shipment and installation of the unit the base has an indentation in its top which is the same shape as the polygon cabinet for supporting the cabinet therein application_number US 61865684 A description referring to fig1 there is illustrated a base pad assembly 10 for use with an indoor fan coil unit of a split type air conditioning system although normally mounted in an attic the fan coil unit and base pad assembly may be mounted anywhere within the structure to be conditioned typically an outdoor unit not shown is mounted on a pad or some other mounting structure exterior to the structure and in communication with outdoor ambient air in a straight cooling unit the outdoor unit would include both a condenser and a compressor if the outdoor unit is a portion of a heat pump the outdoor unit would additionally include a four way valve and the condenser would be the outdoor heat exchanger capable of being either the condenser or the evaporator depending on the mode of operation of the system located within the indoor fan coil unit which is inside the structure to be conditioned is a heat exchanger formed from a plurality of runs of heat exchange tubing wound in a generally cylindrical configuration refrigerant lines connect the indoor fan coil to the outdoor unit as can be seen in fig1.