16 in by 12in by 6 in box made from recyclable laminated materials for temperature consistency during the dry age process. Ventilation holes are incorporated into the sides of the box with an exhaust hole with a fan attached in the lid for optimum air circulation. A rack, moisture absorbent pads and a digital temperature/humidity gauge are included. Just add the meat, place in the refrigerator and plug in the fan (USB connector) to start the dry age process. Make a good steak a great steak!