For use with the 3M™ Breathe Easy™ Turbo Powered Air Purifying Respirator (PAPR) Assembly 520-17-00, Breathe Easy™ Turbo PAPR Unit 022-00-03R01 and the 3M™ Powerflow™ Face-Mounted PAPR System. NIOSH approved with A, AE, E, K, P3 cartridges