A drawer assembly which can be assembled in different ways to provide different drawer units suitable for holding medical items during bio-decontamination. The invention provides a kit of parts comprising: a plurality of drawers 10 having drawer interlocking means 25 for securing one drawer 10 to another drawer 10； and a frame (70) comprising a plurality of pairs of rails (76) for slidably receiving and supporting drawers 10. The kit of parts is assembleable to provide at least two different configurations of drawer unit. In a first configuration at least one drawer 10 is located directly on top of another drawer 10 and is secured to the underlying drawer 10 by configuration the drawer interlocking means 25. In a second configuration, drawers 10 are each supported by a pair of rails (76) in the frame (70).
