In 1942, reefer cars were built for the purpose of keeping suitable goods cool. These Interfrigo cars had several specific materials:
- a 300 mm thick layer and an inner lining made of zinc sheet to protect the wood from moisture
- to keep the doors watertight, the revolving doors were changed by sliding doors
- vertical panels were painted in white
From the 1950s, the German railway company DB made several changes in the design but also in the design by remodeling it. For example, the axles mounted on bearings required a lot of maintenance, and therefore wasted time, so the engineers replaced them with other more modern bearings.
The model train manufacturer Brawa, therefore offers a reproduction under the HO scale: 1/87 of these cars.