The Atlas Master N Scale Cryogenic Reefer is based on cars introduced in the 1990s. They′re commonly used to transport frozen food using cryogenic refrigeration technology. This model features an injection-molded body, improved crossover walkways and brakewheel detail, fine decoration and body-mounted Accumate(R) magnetic knuckle couplers. The Cryogenic Reefer is one of many Atlas N Scale reefers.