Caster Barns General Duty Casters main frame and raceway are formed from a single piece of heavy-gauge steel, deeply corrugated to withstand stress and prevent distortion under full rated load. They are mostly used in applications from home garages to large industrial plants; some of these applications include: furniture dollies, miscellaneous service carts, bakery racks, parts bins, store displays, laundry hampers and many other all-purpose applications.