Use the following guide to determine the size of tray you need for your cooler. Max Cooler Companion trays come in a variety of sizes that work with most any well insulated cooler.
Coolers 50 quart or less, use: 1 Deep tray and 1 Thin tray -or- 3 Thin trays.
Coolers 51 quart and larger: 4 Thin trays -or- 2 Deep trays -or- 1 Deep and 2 Thin trays.
* size designed to fit half of the cooler, two trays will fit side-by-side