Industrial door motor Gear drive system Used for industrial roller door ,garage door ,industrial door(300kg~1200kg) Industrial door motoraccessories for industrial roller doorChain motor is beautifully shaped ... and so on. Voltage : AC220V 50HZ :300-1P,500-1P,600-1P,800-1P AC380V 50HZ :300-3P,500-3P600-3P.800-3P.1000-3P.1300 ...