●The opening size is approximately 3m *3m.
● It is the structure that is compact with simplicity.
● There are few marks of the component, and there are few operation parts.
● It does not need disassembly and the movement such as Ash gate, a crusher, the jet pump.
● Because they only remove part of the jetting plumbing, the preparations are simple.
● The drawspan weight is very light, and the opening and shutting movement is carried out by button operation quickly.
● In the case of 3V form Hopper, I can install two places of carrying-in space.