JoistRite® is a specially designed, patented, cold-formed steel “C” section that has the highest strength-to-mass ratio available in the industry today. It’s excellent thermal, fire and acoustic properties add to the list of characteristics that make this product absolutely unique. As an added benefit, the large triangular knock outs allow for easy installation of wiring, conduits, plumbing and heating ducts without the need for cutting or drilling holes.