The Blue Pure 121 Extra Protection Particle and Carbon Filter protects against both gaseous and particulate contaminates. The high amount of activated carbon pellets within this huge combination filter remove stronger odors and harmful smoke, gases and VOCs up to 2 x faster. At the same time, the particle filter media catches virtually every airborne contaminant down to a virus (0.1 microns) in size: pollen, dust, pet dander, mold spores, allergens and bacteria. With a large surface area as well as 360-degree air intake, the Blue Pure 121 Extra Protection Particle and carbon filter has a higher capacity and longer filter lifetime. In addition, the less dense polypropylene filter material improves air flow for better performance, while naturally discouraging mold and bacteria growth. The click-and-change filter is easily removed and replaced, and can be put into recycling at the end of its service life.