This stainless steel pan tray is made from 304 Commercial Food-Grade Stainless Steel material. This 40 x 40 cm tray fits all our standard commercial models (excluding the 28CUD). While this tray option can be used to dehydrate most products, it is specifically designed for liquid products that cannot be placed on our standard mesh trays such as bone broth and sea water. All our dehydrator trays are dishwasher safe for your convenience.