Patented technology keeps the product fresh and preserves the potency, color, shape and nutrition of any organic material. Freeze drying retains 97% of the nutritional value with a 25-year shelf life. The freeze dryer has built-in intelligence. It automatically and perfectly manages the freeze drying process. 6.5 sq ft of tray space. Shelf unit has shelves for 7 trays and 4 L of ice capacity. 110 V outlet. Maintenance: simply filter and replace oil. Comes standard with 7.2 CFM vacuum pump and 1 quart of vacuum pump oil. Overall product dimensions are 20 in W x 25 in D x 30 in H and a shipping weight is 221 lbs.