Precision stepper motor for ultra quiet operation. The unit is raised above the mounted surface to reduce spilt fluid ingress when in the open position. A wide variety of colours and finishes are available. Simple ratchet mounting system provides easy installation. In the event of an obstruction, the unit will stop and reverse back. This item is new and in original packaging. Mon-Fri 09:00 – 17:00. Please, check out our other items Thanks. Moreover, look forward to doing business with you again in the near future. Please do not forget to leave us 5-star feedback. Please check with us BEFORE placing an order.