The Drop-In Refrigerated Well is a top mount unit that can hold up to three pans. It features electronic temperature control, auto defrost, and pan support bars for full-size pans. The well is insulated with a 1" drain and has an aluminized steel housing with a stainless steel bezel. It utilizes R-404A refrigerant and does not come with a condensing unit. The well is made in the USA and is NSF 7 approved. The CWBR models include a condensing unit and control panel, while the CWBX models only include a control panel. Optional accessories include a slant kit, additional warranty on the compressor, pan support bars, stainless steel food pans, trivets, and a false bottom.