We call it Stealth for a reason! Obliterate bad air and odors once and for all! A new generation in air purification. Easy to install, easy to use, easy to maintain. It is adaptable to any duct/filtering system. The high-flow carbon filters are replaceable. The Stealth Air box uses 100% premium virgin coconut charcoal, uses 100% of the filter surface area and are a 100% air tight with continuous worry-free operation. Air Exclusive, the Coconut Shell Carbon Granules that have activated carbon granules that are an absorbent with well developed pore structure allowing for a range absorbent retention.