s This study was directed to examine the strength of RSC type cardboard box depending on height of he box. Boxes with different heights were made from several types of corrugated cardboard. It was investigated whether the influence of height of the box on box strength is linear or not. In theoretical part production of corrugated cardboard and cardboard package is described in detail with many photographs, as wall as tests of the corrugated cardboard and cardboard box. Experiment results show flute and linerboard properties, corrugated cardboard properties and cardboard box strength depending on construction and materials of the box.