Allerair s Hepa-carbon combination neutralizes airborne irritants with its dual action cleaning power offering you the best air filtration available without generating additional pollutants like ozone. The Tar-Trap Filter takes the filtration level a step furthur allowing more smoke chemicals gases and odors to be absorbed. Tobacco smoke and odors are most effectivelly trapped when your air purifiers work on low speed. The Tar-Trap Filter requires no tools and is easy to install usually in less than a minute. It removes 99.97% of large airborne particles and allergens that can greatly hinder your breathing. These filters are available in packages of ten and have a lifespan of up to twelve months depending on your amount of usage. AllerAir air purifiers use a five-stage filtration process: A pre-filter to capture large particles. A medical-grade Hepa filter guaranteed to trap 99.97% of airborne particles 0.3 Microns in size. An activated carbon filter with pounds of granular virgin carbon to filter out chemicals gases and odors. Two anti-microbial filters. Compatibility: Use with AllerAir 5000DS Series.- SKU: ALLRRI011