Thermo King SL-400e Trailer Refrigeration Unit

Meet extreme cooling demands with the Thermo King SL-400e, a high-capacity, single-temperature trailer refrigeration unit featuring electric standby capability. This unit is specified for large trailers (48-53 ft), deep frozen applications, and punishing high-ambient conditions, such as multi-stop frozen distribution in hot climates.

Equipped with a reliable Thermo King four-cylinder diesel engine and a belt-driven open compressor, the SL-400e ensures rapid temperature pull-down and recovery after door openings. Its microprocessor control system offers programmable setpoints and automatic defrost. Available new or inspected used, starting at $9,500, it’s the ideal choice for challenging routes requiring consistent temperature integrity.