Rugged Box with additonal internal drawer

adapted and improved rugged box (openSCAD model). the internal main volume is 245x75x90 (WxBxH) and additionally there is the a drawer that fits inside the box. the box is prepared to fit “Wolfcraft B3750 Universal Dowelling Set”buy here: https://www.amazon.de/-/en/Wolfcraft-B3750-Universal-Dowelling-Set/dp/B0001P19PE