This commercial countertop vacuum sealer machine from VacMaster is model VP321 and it's similar to model VP320 except that instead of one, long 16" sealbar this machine has two sealbars, both measuring 17" long. If you vacuum-seal a large number of smaller bags, this machine allows you to line your bags up along the sealbars and get a lot of them done at the same time, saving time and money. The Vp321's chamber is 16.75 inches wide by 18 inches long x 7 inches deep and it's served by a powerful commercial grade 1.5-Hp vacuum pump. The large capacity and powerful pump of the VP321 make it a superb option for large food processing businesses. Chamber vacuum machines like the VP321 use more affordable bags than do external sealers, and this machine comes with 100 bags of various sizes. If you need to vacuum-seal messy and liquid-rich foods such as soups and stews, then you need a chamber vacuum sealer the external vacuum sealers unfortunately tend to vacuum out liquids as well as air out of the bags they seal. This machine also comes with two plastic filler plates (filler plates just take up space so the vacuum sealer's 1.5-Hp pump has less air to suck out. With its easy to clean and attractive exterior of high grade stainless steel, the VP321 is a great-looking and money-saving choice to add to your busy operation. NSF approved.