Air Box Stealth circulates clean, healthy fresh air. Replaceable carbon filters destroy odors, capture organic and non-organic contaminants and scrub pathogens from the air. Air Box is designed and built with replaceable high-flow, high quality carbon filters made from exclusive 100% premium activated charcoal. The only in-line carbon filter designed for commercial, industrial, residential environments. Air Box is designed to hang off the ground to save space. When combined with F5 air movement fans, Air Box Stealth is a highly efficient, very effective air filtration and ventilation solution. All Air Box systems are quiet and powerful.