Designed for the segmental retaining wall business, Fall-Guard is an adjustable safety fencing that attaches to the face of the wall with ease. This fall protection system includes sturdy crossrails that are height adjustable, and meet OSHA's 200-pound weight requirement. Because no harnesses are involved, it allows total mobility for anyone in the work zone behind the wall. Fall-Guard/Kirchner Block. 800-346-9502.