The ArcticLight MSS™ consists of a light-gauge steel framework embedded within a matrix of expanded polystyrene (EPS) foam insulation. The 12-inch thick panelized system delivers a composite insulative value of R-50 and can be assembled on site with simple hand tools and minimal labor effort. A 1200 square foot structure may be erected in as few as 3 days with only 2 people and no specialized tooling or equipment. The basic MSS panel is 4 feet wide by 10 feet tall and weighs only 140 lbs.  The addition of sill, header, king-stud panels completes the wall assemblies.  Floor joists and trusses are installed with patented connectors, forming a basic structure ready to heat and finish in a few days.