... , good effect of heat insulation, energy save, simple and convenient structure high impact strength, simply can conveniently ... Size:1220X1830X1840mm,1830x1830x1840mm,2440x1830x1840mm,2440x2440x2240mm,3660x2440x2240mm,4270x2440x2240mm, color and size can also be customer made .2. ... polycarbonate sheet is light, strong, safe, and virtually unbreakable and easy to handle.4. 1mm galvanized steel ...