All-O-Matic GBX-300 Gearbox Replacement 60:1 In-Ground receiving power and control signals

receiving power and control signals from the primary DoorKing 6300-380 operator for perfectly synchronized movement

Original Part: Genuine LiftMaster component for reliable performance

Warranty: 5 years commercial

Auxiliary input for added security – Enables integration with external switches or dial-out features

Safety Compliance: Requires UL 325 Type B1/B2 monitored device (not included)

All-O-Matic GBX-300 Gearbox Replacement 60:1 In-Ground receiving power and control signals60: 1 Gearbox for Swing Gate Operator Drive Systems The All O Matic GBX 300 Gearbox is a genuine replacement drivetrain component designed to restore controlled movement in compatible swing gate operators. With a 60: 1 gear ratio, it supports consistent torque transfer and dependable gate travel in secured access environments where worn gearing can lead to hesitation, binding, or inconsistent operation. This gearbox is specified for All O Matic SW300