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        (click  image for details) 
        
        Gray Matter ® 
  
  
        outperforms 3M's FiltreteTM,
         
         an 
        electret which contains no odor adsorbent. 
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        Any air conditioner may 
        be converted 
        into a room air cleaner 
        which traps 
        allergens, traffic fumes, smog and 
         
        odors. 
  
  
        
        - remove the ineffective sponge/screen 
        "filter" 
        - replace it with 
  
  
        
        Gray Matter ® media 
        - turn fan ON 
        - puff electret to a light gray with CBP 
        - use normally with outside air vent closed 
         
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