www.safetyandhealthmagazine.com/articles/temporary-guardrail-2

Temporary guardrail

October 1, 2011
For 4- to 10-inch-wide vertical walls, the ParaShield makes installing a temporary guardrail fast and easy. Applications include concrete block construction, window openings and vertical parapet walls commonly found on residential and commercial flat roof construction. No drilling is required. The steel-constructed guardrail clamps are durable and reusable and exceed OSHA guardrail strength regulations.

Safety Maker Inc.