Polar King reveals new refrigerated trailer

The PKM620, introduced during this year’s NATDA Trailer Show, now stands as the industry's largest mobile cold storage walk-in unit for over-the-road use.

Sept. 3, 2025

2 min read

Unlike other trailers in the Polar King lineup, the new unit features two full-sized doors, including one on the side.

Polar King recently unveiled its new PKM620, a 6-ft.-by-20-ft. trailer that stands as the largest mobile cold storage walk-in unit in the industry.

Featuring Polar King’s seamless fiberglass construction, the PKM620 offers a sanitary, durable cold storage environment capable of reaching sub-zero temperatures, the company reported. Unlike other trailers in the Polar King lineup, the new unit features two full-sized doors, giving operators faster, safer, and more efficient loading and unloading for high-volume operations.

In addition to the backdoor, there’s also a door on the side of the unit.

“The PKM620 represents a bold step forward in mobile cold storage,” Danny Gaviria, national sales manager for Polar King’s trailer division, said in a news release. “It combines the size and capability our customers have been asking for with the energy efficiency and reliability Polar King is known for.

“We’re proud to add this massive unit to our standard line of trailers, and we know it will help customers from day one.”

Additional PKM620 specifications include:

All-electric power
220 volts, 17.5 MCA amps
9,400-lb. capacity

Polar King introduced the trailer during this year’s NATDA Trailer Show in Nashville.

See also: Polar King to unveil new trailer

Including the introduction of the PKM620, Polar King now has four trailers in its standard lineup ranging from 8 ft. to 20 ft. The company’s over-the-road refrigerated and freezer units are certified by the NSF, as well as by the National Association of Trailer Manufacturers (NATM). Polar King is also ISO compliant, ensuring the units meet stringent safety, manufacturing, and regulatory standards.

The trailers are designed for multiple industries, including foodservice, catering, agriculture, hunting, baking, and other temperature-sensitive applications.