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. Perfect for freeze drying herbs, oils, medicines, remedies, pharmaceuticals and compounds. The freeze dryer has built-in intelligence. It automatically and perfectly manages the freeze drying process. 10.25 sq ft of tray space. Shelf unit has shelves for 8 trays and 6 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 22.5 in W x 25.5 in D x 32.5 in H and shipping weight is 274 lbs.