... torque:45NM CCC, CE, ROHS, UL AC 45Nm tubular motor for roller door CCC, CE, ROHS, ULStandand type Quiet&Noise Mechanic ... Limit+Manual,external motor with four wires Tubular motors are ... garage door etc.Compared with outside motor,it is less excluded volume,more fit for roller shutter window and door. electric roller shutter tubular motor