LiftMaster 65520814STK Dual-Trolley Modification Package – 1/2 HP T Operator, 14-Foot Application

Configure a compatible LiftMaster 1/2 HP T-series commercial trolley operator for a 14-foot dual-trolley installation with package 65520814STK. A dual-trolley arrangement provides two connection points to help operate qualifying wide, heavy, or reinforced sectional doors more evenly.

Product details:

• Manufacturer: LiftMaster

• SKU: 65520814STK

• Application length: 14 feet

• Operator type: Compatible T-series trolley operator

• Operator rating: 1/2 HP

• Configuration: Dual-trolley modification

• Commercial application

This package is not a complete commercial operator. The operator, rails, drive chain, cross shaft, door arms, mounting supports, and other installation components may be required separately unless expressly listed with the supplied package.

Compatibility depends on the exact operator model, rail arrangement, door width, height, weight, balance, construction, track configuration, and available overhead clearance. Cross-reference this 14-foot package with LiftMaster dual-trolley modification 65-5208 and the operator’s current installation documentation before ordering.

Dual-trolley systems require precise rail spacing, shaft alignment, chain tension, and synchronized door-arm geometry. Installation should be completed by a qualified commercial-door technician. Disconnect and lock out electrical power, secure the door, and confirm that the door is properly balanced before connecting the operator.

Order 65520814STK only for an approved 14-foot, 1/2 HP LiftMaster T-operator dual-trolley configuration.