6 x 12 refrigerated trailer polar king mobile trailers are designed and engineered specifically for outdoor use. the patented process for constructing the one-piece structure polar king walk-in refrigerated trailers incorporates urethane insulation completely encased in fiberglass both inside and out. there are no seams and the structure remains completely intact so air and moisture will not deteriorate the insulation. validation testing shows that all three standard trailers hold 0°f -18°c in 95°f ambient temperature. these compact units provide a temperature range of 0°f to 50°f are all-electric and require only 110v and 15 amps. storage space 416 square feet 54″ reinforced door 4″ walls
