PU Sandwich Panel OSB, fiber cement facing SIPs The panels are made by sandwiching a core of rigid foam insulation PU Sandwich PanelOSB, ... fiber cement facing SIPsThe panels are made by sandwiching a core of rigid foam insulationDefinition of SIP:Structural insulated ... size: 1220x2440mm,1220x2743mm,1220x3050mm,1220x6100mm,Thickness: 114mm,165mm, 210mm, 257mm. PU Sandwich Panel