At the full size of a systainer sys 4 tl and equipped with three large drawers (with dividers), the new sortainer sys 4 is an all-new, lighter format than the traditional sortainers, with a new style of drawer latch, removable dividers and placements for removable (optional) storage boxes. Optional storage boxes (available as a set) can be used for even greater onsite efficiency. Compatible with t-loc and classic systainers (attached to bottom).