The DRY-KEEPER PLUS™ is a non-vacuum unit that has an electronic desiccant control which lowers the relative humidity inside to between 20 to 30% in 6 hours of unloaded continuous operation. Electrically operated, the unit circulates air through the enclosed permanent desiccant. The insulated cabinet is molded from ABS plastic and features a one-touch door latch, silicone rubber door gasket, and hygrometer dial in the door. Three clear, removable shelves with vent holes are evenly spaced. Dimensions: 31 x 35.3 x 43 cm high. 110 volt. 1 year warranty.