25 Ga./18 mil. Gauge Deep Leg Steel Track, 3-5/8" x 10' 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.