PU Sandwich Panel OSB, fiber cement facing SIPs The panels are made by sandwiching a core of rigid foam insulation PU Sandwich PanelOSB, fiber ... are made by sandwiching a core of rigid foam insulation (EPS, PU, XPS and so on) between two skins of structural ... : 1220x2440mm,1220x2743mm,1220x3050mm,1220x6100mm,Thickness: 114mm,165mm, 210mm, 257mm. PU Sandwich Panel