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Miele Active AirClean Filter (SF-AA 50)
Summary
Miele's Active AirClean filters feature an active charcoal layer to neutralize and absorb odors. Once activated, a TimeStrip® releases a red line of liquid over the course of one year, reminding users when it's time to replace their filter.Suitable for the following Miele vacuum cleaners:
S4 series, S5 series, S6 series, and S8 series.