The AF501 portable HEPA air filter is a compact, efficient unit that delivers air scrubbing/negative pressure air movement capabilities, as well as outstanding air filtration. Featuring a two-stage design, the AF501 includes a 30% pre-filter and a 99.97% efficient HEPA secondary filter, capable of capturing allergens and other particles as small as 0.3 microns. An indicator light on the unit alerts users when to change filters to maintain optimum airflow and filtration. A variable-speed motor allows the filter to provide adjustable airflow rates up to 500 cubic feet per minute.
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