Genuine LiftMaster 7DUALTROLLEY12 dual trolley mod kit, tdc7, to 12 ft for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum TDC7 trolley operators.
Converts a TDC7 to a dual trolley configuration for doors up to 12 ft high. Second trolley rail and hardware included.
See the full Maxum DC Operator Accessories & Kits guide for every trolley, sprocket and mounting kit, or call us with your door height and model number and we will confirm the right kit.