This design is made to where the vertical laminar flow will move through the pass box and goes from the top to the bottom. It keeps a clean ISO 5 level inside the box and makes it better for use than the area of entry. This filter unit has an electric blower and HEPA filter that keeps the setup clean. This allows the internal air to be recirculated with ease and the intake air is filtered in with an opening around the top end of the cabinet. This makes it so the internal chamber can be handled with a positive pressure setting to keep a good adjustment setup between the two rooms in a spot. The door lock is made to work with a computer for the whole length of the sterilization process and will electrically lock up the setting to keep it safe. This can also unlock automatically in the event that there's a power outage in the middle of the decontamination process.