The PFF20000 is a 4th generation replacement filter from the PFFG4 series, specifically designed for use with PF/PFA 2XXXX fan filter assemblies. It incorporates a special, patent-pending fluted filter design that extends the time between maintenance by up to three times. This advanced design also permits greater CFM airflow in dirty environments, ensuring consistent cooling performance. These filters are conveniently sold in packs of five and are both RoHS and cAUS compliant. The combination of extended service intervals and enhanced airflow makes the PFF20000 an effective solution for protecting enclosed electronics.