Product details:

Comes standard with the Alen T100 and T300 HEPA Air Purifiers, the Alen HEPA-Fresh Filter combines three layers of filter technology to purify and freshen the air in your home. Contains 2 filters. Polluted air first passes through Alen's replaceable 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, light smoke, mold spores and other airborne pollutants. In the final layer, clean air passes through a layer of Alen's Activated Carbon, reducing light odors. The Alen T300 HEPA Air Purifier requires both filters. The Alen T100 HEPA Air Purifier requires only one.