Designed for the Alen BreatheSmart HEPA Air Purifier, the Alen HEPA-Pure Filter combines two layers of filter technology to purify and freshen the air in your home.
Polluted air first passes through Alen's washable Pre-Filter to capture large particles, extending the life of the filter. In the second layer, air moves through a unique, electrostatically charged HEPA type material that attracts and captures dust, pollen, pet dander, mold spores and other airborne pollutants. Relief from allergy and asthma symptoms has never been so simple.
There is no warranty for Alen filters.