The closed frame yields a device many times stronger than it's open frame counterparts and the extra heavy tubular stainless steel bars stand up to severe abrasion. These characteristics yield a descent control device with a service life many times longer than their competitors. Offered in two frame lengths with either four or six bars, both of which easily accommodate two 1/2" ropes. Top bars are of the double hyper-bar design which provides added load control options and simple and secure lock offs for either 1 or 2 ropes allowing independent control over both ropes. A slight variation on the 4 bar Rescue-Rack uses a second double hyper-bar in place of the third bar. This allows the operator to add extra wraps around the hyper-bars to increase friction to maintain control under demanding rescue conditions. All models are easily locked off by passing a bight of rope through the frame and looping it over the hyper-bar.