... alloy,polycarbonate,channel steel 4)package:carton name:garden green house equipment 50#model:50#material:aluminium alloy frame,polycarbonate, channel ... of warm house in our factory,size from 1330mm~4440mm.It has exported for many countries include Germany,Australia,Russian,England,Poland and ... to assemble and DIY per the assembly Instructions garden green house equipment 50#