The SC-420LR is a floor model vacuum machine that has two sealbars, one on either side of the chamber, instead of just one at the front like most chambered vacuum sealers machines. Built completely with stainless steel, the SC-420LR includes a transparent lid, bladder activated seal and stainless steel housing. Includes durable aluminum seal bars, and a BUSCH vacuum pump. The most valuable benefit of these floor model versions is their increased portability. Equipped with heavy duty casters, these machines can be rolled from room to room without the need for heavy lifting or usable table space. The ideal machines for small processors, retailers, restaurants, and laboratories, these machines can be installed virtually anywhere with a standard 110-volt outlet.