Alen BreatheSmart FLEX True HEPA-Pure Filter: B4-Pure / FL40-Pure Filter:HEPA-Pure These factors all combine to

These factors all combine to make the 45i Silver filter the best choice for a room with a combination of multiple air quality issues

BreatheSmart FIT50 thinks about air quality so you don't have to

travel and fitting into tight spaces

and take control of your indoor air environment

Alen BreatheSmart FLEX True HEPA-Pure Filter: B4-Pure / FL40-Pure Filter:HEPA-Pure These factors all combine toPolluted 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 True HEPA material that attracts and captures dust, pollen, pet dander, mold spores and other airborne pollutants. Alen then adds an antimicrobial compound to the HEPA type material, protecting the filter from harmful bacteria* and microbe growth. Relief from allergy and asthma symptoms