The Tray-Master is a non-insulated meal tray delivery cart designed for high impact resistance and frequent use. Easily stack Rock, Rock 2.0, or X-Trays neatly inside. Accommodates trays up to 9 1/2" x 14 1/2". Raised top edge surfaces safely holds more trays, beverage servers and wash racks. Handle slots for easy navigation. 90 degree Dual-Lock doors (lock open/lock closed) for easy and efficient insertion and removal of trays and increased safety in transporting. Highest quality non-marring kingpin-less casters. High impact "no break" polyethylene. Structural design for maximum strength. Smooth finish reduces marring of wall surfaces. Easy to clean and maintain. Holds 108 X-Trays, 114 Rock 2.0 Trays or 156 Rock trays. Trays sold separately. Manufactured to ISO Quality Standards in the USA.