assembly 4 within chain guide 46 returning to fig1 and 2 floating rod assembly 6 comprises down member 10 preferably a hollow tube or bar floating rod assembly first end 50 is received by floating rod assembly first end receiving member 52 described above in a preferred embodiment floating rod assembly first end receiving member 52 is for example a u shaped bracket u shaped bracket receiving member 52 is affixed to floating rod assembly first end 50 for example with a press fit weld or one or more bolt and nut a plurality of hinges 60 fig4 are mounted to panels 62 each panel 62 is attached to roller 58 at its upper end rollers 58 alternate facing inward and outward to engage inner and outer walls of the track 82 outer channel fig7 at least one panel 62 but preferably a plurality of panels 62 comprises a partition side at least one preferably a plurality of orifices 17 are positioned along the length of floating rod assembly 6 and hinge 60 to receive a connector 14 for example a bolt 72 and acorn nut 74 to connect floating rod assembly 6 to hinge 60 of a first partitions side 90 fig3 preferably the connectors 14 are spaced about every four feet floating rod assembly second end 54 adjustably receives bottom assembly 8 in a preferred embodiment lower floating rod assembly first member 30 is slidably received by floating rod second end 54 floating rod second end 54 contains orifices 12 to lock lower floating rod assembly first member 30 into position using fastener 64 to maintain the lower floating rod assembly first member 30.