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True HEPA removes 99
efficiency
Alen then adds an antimicrobial compound to the True HEPA protecting the filter from harmful bacteria* and microbe growth
Flexible style to fit your decor and change as often as you'd like
Alen BreatheSmart Classic Replacement Prefilter 4-Pack "Allergies-and-dust" True HEPA removes 99Your pre filter is the first line of defense when it comes to your purifiers four stage filtration system for cleaning the air. The pre filter is the black foam layer that covers the exterior of your filter. Its designed to capture larger particles such as dust and cat or dog hair. Keeping your pre filter clean will extend the life of your filter and keep your purifier working at peak efficiency. Pre filters can be removed and cleaned by vacuuming,