All units in this section will hold any size of Gratnells tray. Shallow trays take 1 slot, Deep trays take 2 slots, Extra Deep trays take 3 slots and Jumbo trays take up 4 slots. Just calculate how many trays in each of the sizes you need to fill your unit and we will supply. It's all included in the price! All Gratnell tray colours are available. We've made some suggestions in the drop-down boxes against each item, but if you want something different, just give us a call. We'll be pleased to help!