Disposable HEPA / ULPA Filter Unit(DU) Features: In accordance with EN 1822 Class H11/H12/HH13/H14/U15/U16/U17 In accordanve with IES RP-CC-001.3 TYPEA/B/C/D/F Conditions: Max temperature 80 Max humidity 100%RH Testing(D.O.P. OR P.S.L.) 99.999% 99.99% at 0.3micro 99.97%