Modular guardrail systems combine heavy-duty rails and posts to create safety barriers that protect pedestrians, machinery, and equipment from damage caused by vehicle impact. As visible. 2-Rib Guard Rails - Prevents a 10,000 lb. forklift load from breaking through at 4 mph. Posts - 4" square, 1/4" thick steel posts support single, double or triple rails. With the expansion of Wildeck's industry-leading Wilgard guard rail brand, Wilgard XT (XTra Tough) and. Choose from our selection of build-your-own guardrails, highway-style guardrails, guardrails, and more. The Step Guard offers unprecedented heavy-duty low-level protection that prevents injuries and damage in vehicle charging areas, goods holding areas and pedestrian walkways. Take warehouse performance and operational efficiency to the next level.