20 Ga./33 mil. Light Gauge Deep Leg Steel Track, 6 in. x 10' (1 1/4" Flange) Lightweight steel track is an easy to install, non-combustible, high quality alternative to traditional 2x4 wood stud framing. Application: For walls that will vary in height due to uneven flooring. Benefits: Environmentally friendly. Won't shrink, swell, split or warp (which reduce fastener pops). Easy to cut with tin snips. No sawdust for easy cleanup. Termites/Rodents won't interfere with structural integrity.