... is a quite special innovation. 1, Attached photo shows a 20m span width Arcum Tent, which is the recently and the most specially designed tents ... Protruded Eave if the span width is less than 15m.2, The clear-span width of ARCUM20 is 20m, length could be 20m, 25m, 30m and ... workshop.8, Sizes available (the widths of the Arcum Tent): 10m, 12m, 15m, 18m, 20m, 25m, 30m, no restriction on length by adding ...