Genuine LiftMaster TDC48-18 #48 door drive chain kit for doors up to 18 ft for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum TDC 700 trolley operators.
Cut for doors up to 18 ft. The TDC 700 runs #48 chain; the TDC 1200 and 2200 run #41.
Ordering the right part depends on the full model number, which is printed on the operator label. Call GateHouse Supplies if you are not sure — we service these units every day.