outside motors chain drive system motor Used for industrial roller door ,garage door,commerical door ,storage door opener Outside MotorAccessories for industrial roller door :Chain motor is beautifully shaped with ... ,large factory doors,garage doors and so on.Models:220V AC, 50Hz: 300-IP, 500-1P, 600-1P and 800- ... 1P380V AC, 50Hz: 300-3P, 500-3P, 600-3P, 800-3P, 100 ...