Guardrail marks the boundary between forklift and vehicle traffic and everything that isn't supposed to get hit, rack ends, building columns, pedestrian paths, mezzanine edges. It's a modular system of posts and rails, bolted or drop-in mounted, sized to the run length and the impact energy it needs to absorb, not a fixed fence you cut to fit.
This covers structural guardrail, handrail systems for elevated edges, and the gates and hardware that let people and equipment through a protected line without removing it. Rack end protectors and column wraps that use the same rail hardware are included here too, same system, different mounting point.