The Material and Spare Parts Shelving Unit—MER for short—serves as a logical extension of the PREY product line for storing all standard items found in hose maintenance workshops for which no separate storage or shelving units are provided on hose maintenance systems. It consists of special galvanized angle profiles with cross-bracing.

The MER has seven storage levels, which can either be included as part of the initial configuration or added later, and can be easily adjusted in height using a screwless snap-fit assembly.