Genuine LiftMaster TDC41-20 #41 door drive chain kit for doors up to 20 ft for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum TDC 1200 and TDC 2200 trolley operators.
Cut for doors up to 20 ft. The TDC 1200 and 2200 run #41 chain; the TDC 700 runs #48.
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.