The 521BW is the Series 5 answer to a common problem: you want wall bars but cannot, or would rather not, drill the wall. Brace it between floor and ceiling, anywhere in the room with a ceiling between 94.5" and 107" (240 and 272 cm), or bolt it to masonry in the conventional way. Both mounting systems come in the box and each works on its own.
Above the eight beech rungs sits a fixed steel 6-grip pull-up bar for hangs, pull-up variations, and band work. Capacity is 330 lb (150 kg) per user. Built in Poland and certified to the European norms for professional gymnastic equipment, the same approval that admits it to gyms, schools, and hospitals.