The series provides versatility in storage, display and temperature combinations in a traditional, bottom mounted design. It also features a deeper cabinet to meet the operator's specific storage needs. Patented vacuum relief valves in addition to conventional pressure relief mechanisms ensure rapid re-entry while keeping an airtight seal. Equipped with the Blizzard R290 system, a fully self-contained and detachable condensing unit which uses natural, environmentally friendly, EPA-compliant R290 refrigerant with zero (0) Ozone Depletion Potential (ODP) and three (3) Global Warming Potential (GWP). Blizzard R290 is easily replaceable and requires no on-site brazing.