... compressive strength,waterproof, fire retardent save time&mo Structural insulated panel wood+MDF+XPS+OSB, OSB+XPS+OSB high compressive strength ... for you. The design of SIP panel is such that it reduces the amount of air leaking into and out of the house, thus ... , lower thermal conductivity and longer service life etc. The normal size of our SIP panels: Length:2400mm, width: 600mm, thickness: 30-140mm ...