The Delta Prevention GR-CLA01 is a 10' aluminum non-penetrating guardrail kit designed to elimintate falling hazard along the roof leading edge. Ideal to protect small HVAC units and beside access ladders, the VSS Classic uses couterweighted legs under each vertical post with specialy designed end-assemblies. This kit is engineered with heavy-duty 1.9" OD anodized aluminum tubes for corrosion resistance and a durable architectural appearance. It features our patented 50 lbs recycled-rubber counterweight bases for a 100% perforation free installation. Complies with OSHA 1910 General Industry Standards, 1926 Subpart M Construction Standards and CAL/OSHA 3209.