This movement tray is 2 layers of 3mm MDF. This tray holds holds 5, 42mm x 75mm oval bases. The spacing allows for models that overhang their bases and is configured so that multiple trays can be used to form a line or a other shapes more representing a mob. The spaces for the bases are slightly larger than the base size to allow for any extra paint or material which may be on your model's bases.
We use a high quality MDF which will not warp with normal use and can be painted, primed and finished the same way you have based your models.