... & guranteed quality 3. more than 12 years' experience workshop tent, storage tent, warehouse tent 1. SPECIFICATION1) Span width: 12,15m, 18m, 20m ... technically anodized and all steel parts are well hot-dip galvanized.3. COVER PART 1) The roof and sidewall fabric cover ... gutter 3) solid wall, such as ABS Panel, sandwich wall storage tent/ tent for warehouse/ workshop tent