The AccuTemp S64803D140 DBL Two Steam'N'Hold™ Boilerless Floor Model Steamer is a powerful and efficient steamer that features two separate cooking units on a sturdy stainless steel stand. Each unit can hold six 12" x 20" x 2-1/2" pans, allowing for separate cooking settings. Unlike other steamers on the market, the AccuTemp steamer uses steam vacuum cooking instead of forced convection. This patented vacuum technology removes air from the cavity, allowing steam to make full contact with the food and transfer heat efficiently. This also enables the steamer to cook at lower temperatures, which is not possible with forced convection steamers. Installation of these steamers is easy, as they do not require water or drain lines. Simply find the ideal spot and plug them in. Each steamer has its own 3-gallon water reservoir that needs to be filled manually. Any potable water can be used without the need for filtration or treatment. The AccuTemp steamers come with a range of standard features, including a 90-minute timer, heavy-duty door, power on/off switch, front-mounted drain valve, and more. They also have a lifetime service and support guarantee from AccuTemp, regardless of water quality. Optional features for these steamers include a drain kit, marine package, military package, 180-minute timer, and more. There are also multiple kilowatt outputs available to suit different cooking needs. Overall, the AccuTemp S64803D140 DBL Two Steam'N'Hold™ Boilerless Floor Model Steamer is a reliable and efficient steamer that offers advanced cooking technology and easy installation.