V-Bank High Capacity HEPA Filter(VCH) Features: Mini Pleat V-Bank LowP.D Filter In accordance with EN1822 ClassH11/H12/H13/H14 In accordance with ISE RP-CC-001.3TYPEA/B/C/D Long life Low operating cost 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%