This air purifier has two filters – a 4” deep carbon pre-filter and a 12” deep V-Bank carbon filter.
The main filter is the same industrial filter that is trusted by hospitals to effectively remove gases and odors. The 4" thick carbon pre-filter removes dust and pollen sized particles while also adsorbing gases and odors. The 12" deep v-bank carbon filter has 14 pounds of carbon from high grade virgin coconut shell.
Having more filter media means the main filter will last longer (2-3 years) and it creates less air resistance. By not having to work as hard the motor can spin at a slower, quieter rate.
These are the same filters used in Hospital Operating Rooms, Clean Rooms, the Nuclear Industry, Containment units, Laboratories, and Pharmaceuticals. Custom sized filters made by the only company in North America that makes its own HEPA media and made in the USA.