KEELINE horizontal life line system is a flexible, cost effective option for the continual protection of those working at height.The KEELINE horizontal lifeline system provides flexible, continuous protection for up to three users working at height. The system delivers safe access to any area of a roof by allowing workers to be permanently attached to the line at all times and be able to freely move around the roof area. With 5/16 inch Grade 316 stainless steel wire, KEELINE spans up to 50 feet between posts. Inline shock absorbers minimize loads applied to the building in event of a fall. The design has been configured and tested for use on a variety of roof types e.g.