OUR PASS BOX minimizes entry of contaminants into the clean room by providing a means for pick-up and delivery of products and supplies without personnel entry. Productivity is increased because clean room personnel remain clean and on-the-job; delivery personnel andcontaminants remain outside. Dynamic Pass Box consists of blower/motor assemble and filter assembly. Itaids controlling ingress of particulate contaminants into clean room & between different classified areas. Pass Thru are fully hinged, internally coved, gasket, clear acrylic doors, hung left or right,provided easy access and complete visibility.