All steel unit formed from heavy-duty 14 gauge steel and have a smooth powder coat finish ensuring years of use. Units can be made mobile with the addition of the QFS-400 (mobile kit). Units must be securely fastened to the floor to ensure stability. Interlocking tip out storage cabinet bins come complete with stand. Models include: 2 of QTB302, 2 of QTB303, 2 of QTB304, 2 of QTB305, 2 of QTB306 and 4 of QTB309.