... /18m/ , the length can be unlimited extension.Widely used for outdoor exhibition, sports event,party,trade show,trade fair,celebration ... )168mm*89mm*4mm 4channels (15-18m)aluminum alloy for frame structure; Roof fabric is 850g/sqm; Gable fabric, Side wall fabric, ... to larger space and special structure styles.High strength is under our Safe tent manufacturing advanced CNC Process Line controlled.Our ...