Manufacturers of a new building technology. Structurally Insulated panels (SIP). This technology uses a (EPS) expanded polystyrene core between two magnesium oxide compound boards. These boards are 48" wide x 96", 108" or 120" high. The most common thicknesses of the panel varies from 4 1/2", 6 1/2", 8 1/4" and 10 1/4". What makes these Sip's unique is there resistance to fire, mildew and impact. Fantastic for foundations, house walls, commercial buildings, garages and sheds. This technology allows for great "R" values depending on thickness yielding a very heat efficient building. Quick and easy construction with little or no waste. Fast finishing capabilities.