Standard Annual Kit (each set has 1 Carbon Filter, 1 Electret Filter & 1 Zeolite Filter)
Replacement filter sets (3) to keep the unit running at maximum efficiency for one year.
Filter Life: 4 to 6 months - 1st Stage: Activated Carbon V.O.C. Filter - 2nd Stage: Electret Charged Media - 3rd Stage: Zeolite V.O.C. Filter