UltraLife, flame retardant OEM media. FCH000005 provides superior quality and performance. Used in Airflow Systems units wherever 7FR0-2020 is specified: PCH, PCH-1, PCH-2; DCH, DCH-2; DC-4, DC-6, DC-8, DC-12; DTH-1700, DTH-800; DT3000; ALH-1, ALH-2; TC-4, HC-4.