Deep Pleated High-efficiency Particulate Air filter (HEPA) and Ultra-low Penetration Air fitter (ULPA) are available to meet the airflow and particulate control requirements required in cleanrooms, and are available in either knife-edge or gasketed frames to fit any ceiling frame. All Mini Pleated filters can be customized to best meet the requirements of various applications. It is suitable for all kinds of clean rooms, clean benches, clean pharmaceutical plants, biological plants, food processing plants and any other places that require strict control of air pollution.