Fiberglass Strut Profiles: Aickinstrut or Unistrut?? Fiberglass Unistrut Channel System is a popular non-metallic, corrosion resistant alternative to steel Unistrut Metal Framing. The Fiberglass channel sections are available in standard 1-5/8” sizes, however there are two profiles that need to be differentiated when ordering Fiberglass channel. We will cover the two profiles and which products…