Reference D4-12381 as the attached drawing,We have the H-max less than the namal that concern a top frame and a bottom frame height, Please permist us to fit a specail top "U" shape from that limit about the machine bend pressing process, and also a special bottom "U" shape frame but will be fit with small "L"
shape steel bars by many revets,
this bottom frame must be make to stronger than the top.