Heavy duty refrigeration system is top mounted to maximize your storage space. Choose refrigerator for storage from 2 to 10-degrees Celsius, or freezer for storage from -25 to -10-degrees Celsius. Constructed of white epoxy coated galvinized steel, the high density polyurethane foam insulation helps maintain the set temperature. Interior liner and door panel are smooth aluminum, making for easy clean-up. Solid-door units are Energy Star rated for maximum energy conservation. The cold wall evaporator system eliminates build up of condensation. Manual defrost minimizes the flucuation of temperatures within the unit to keep your samples at your set temperature. Four casters are standard for easy movement. Door lock protects your samples.