Pre-fabricated panels usually mean cast off-site, but in this case, MSC panels can be site cast on job site and stored on job site; therefore, selecting the best time to erect them thus maintaining the expedited feature of pre-fabrication. The MSC composite system is ideal for low rise up to six stories, dormitories apartments, condominium schools, and low-cost housing. Steel studs are an integral part of the panel system so interior walls can be insulated with spray on foam insulation before or after panels are erected. Composite floor and roof panels are also available in the MSC systems to compliment the wall system. Excellent sound attenuation, and a fireproof structure are other major features of the MSC system.