Features

• Replacement time: We recommend that you use the filter for a total of 40 hours or 30 days after opening for the longest replacement.　In addition, we recommend that you replace the filtration material with a new one if the following conditions apply even before the maximum replacement standard is reached.　・When you feel stuffy due to an increase in intake resistance (clogging).　・When defects, etc. are observed in the filter material due to spatter of welding, etc.　(Replaced with a new one because the collection efficiency may decrease even if you don't feel stuffy.)　・When dirt is found on the back side of the filter material.