What are the filters made of?

• The Pre-filter is a Polyethylene (PE) sponge filter.
• The Carbon/VOC filter is a blend of Activated Carbon with Potassium Permanganate on Zeolite in a paper frame. (The Zeolite used in AirDoctor is a high-purity naturally occurring Zeolite that is not carcinogenic.)

The majority of HEPA filters are made out of woven glass fibers. AirDoctor UltraHEPA filters are not! In order to provide the absolute highest quality to our customers, AirDoctor makes its filters ONLY out of woven polypropylene, the exact same material used to make N95 respirators used by first responders and doctors

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