Chaindrive Carriage

The Chaindrive Carriage travels back and forth from the long operator rail, and literally pushes the door up and down as supplied by the force of the motor. The carriage has a built-in safety feature whereby it will disconnect from the drive system in case of emergency, or motor failure, to allow the garage door to be operated manually by hand. If the carriage does not stay engaged while in operation, then it may need to be replaced. COST: $23