Product Description VWR Critical Storage Undercounter Laboratory Refrigerator (1 to 14 C (34 to 57 F), Manual Defrost. These undercounter refrigerator and freezer units are designed to meet the demanding standards of clinical, life science, pharmaceutical, biotechnology, and industrial applications. A built-in front-breather condenser allows units to be placed under bench or countertop and requires no additional clearance from the top, back, or sides of the cabinet. These compact units may also be left free-standing, placed side by side, or securely stacked to create a combination refrigerator/freezer.