40 sq ft filtration surface Superior quality HEPA filter 10 pleats per inch (others have only 6-8) with separators to avoid sticking together, warm rolled to avoid cracking results in more effective filtration Metal Caps on HEPA filters are the most inert and environmentally friendly HEPA filter sealing system 18 lbs Activated carbon bed. Adsorbs airborne chemicals and gases like a sponge 20 Watt UV germicidal lamp positioned in the filter chamber sterilizes microbes as they are trapped on the filters Vacuumable pre-filter Simply vacuum through the mesh or change as necessary. 56 sq in filtration surface. Variable speed motor lets you choose your ideal level of filtration All metal housing ensures no plastic vapors are emitted Motor out of the air flow. Most air purifiers blow the clean air over the motor and pick up new impurities before exhausting it. Felt gaskets seal the filter chamber. Maximize filtration with no rubber off-gassing found with other filters Pressure seals on filter chamber ensures all air is filtered Other systems allow dirty air to escape and fail to achieve their promised HEPA rating of 99.97% filtration UV that really works ■ The lamp is situated in filter chamber so it kills micro-organisms as they are trapped by the filters ■ Other UV machines place the UV lamp in the air flow away from the filters. Microbes can escape back into the air. ■ 20 watt UV lamp. 30,000 um per sec 2 provides the dose needed to kill antigens, pathogens and mold spores ■ Lamp may be switched on or off as desired. Warning lamp indicates status. . . m True HEPA Filters Developed by the atomic energy commission to filter radio active particles as small as 0.3 microns Activated Carbon Used in water filtration and in military gas masks, it can adsorb 60 % of it's own weight of airborne chemicals UV Lamps Kill antigens and pathogens by destroying their DNA Remove microbes, chemicals and particles from your indoor air...