Germfree provides a pass-through airlock engineered to meet the demands of a modern cleanroom. The pass-throughs have an entirely stainless steel construction with coved interior and exterior corners and a pharmaceutical grade finish for ease of cleaning. When materials are placed within the pass-through, a HEPA purge cycle is initiated, which rapidly exhausts and filters the interior air until it has reached ISO Class 7. The pass-through interlocks assure that both doors cannot be opened simultaneously and that the receiving side door remains locked until the HEPA purge is complete. These units are available in a variety of sizes and are designed to fit into both new and existing cleanroom facilities.