Heavy lift

● The surface of aluminum alloy is nickel-plated, and it can stay at 15°—105° at will. 

● Support force adjusting section is divided into grades 1-12, the weight of the door panel in the table below two support weight range, comprising a handle by weight. 

● This section is more suitable for large-scale support heavy door, door width 600-1200 recommended height of 400-700.