Attach your own desk top surface to the top of this desk frame to make use of at work or at home; Raise or lower your desk at will with the memory handset and electric motor. The handset has 4 programmable memory settings and up/down manual adjustment buttons. Ultra-quiet electric motor will not disturb other people and is protected from overheating and overloading. Power source required. The frame expands from 43” to 63” long. Desktop surface not included.