"Pass-Box units are used for material transfer in air pressure controlled areas and cleanrooms. Pass-Box doors have an interlock locking mechanism"

In this way, if one of the lid is opened, the opening of the other door is prevented with the help of electromagnetic locks. The fact that the lids are not opened at the same time ensures that there is no air passage between the environments. Dynamic Pass-Box units are used in products with risk of contamination and in areas with different air cleaning class (HEPA filtration). Active Pass-Box units operate according to the recirculation air flow principle. Connection port and apparatus are available to adjust Positive / Negative Air Pressure fordifferent applications. Theair circulation is provided with the fan motor which is located at the top of the equipment. Air is sucked from the grids at the point close to the ground in the material transfer chamber and is sent back to the transfer chamber after passing through the HEPA filter below the fan motor.