4 x 50 model trays.
These trays fit in GW cases and carry 50 models per tray! A GW case fits four of these (200 models instead of the normal 108). The compartment size is 40mm x 25mm x 23mm (L x W x D). The overall size of the tray is roughly 36cm x 26.5cm x 3cm (L x W x D), so you can carry larger figures with ease and more of them too.