Earlier prototypes by our principal designer Mr Aaltio
This beam was made by Metso Paper in 2011. The design is a classical unified self-supporting beam. All the technical devices are placed inside the smooth outer surface of the main stress-bearing beam.
This beam was made by Metso Paper in 2009. This massive supporting beam is only 1.5mm thick. The structure is sturdy yet light and therefore inexpensive to produce.