DESC: Have you ever seen one of those black puffs of toxic smoke that a diesel truck coughs into the air every time the accelerator is pressed? That putrid mass of chemicals is just one of many foul things that can enter your home and your lungs. Enter the Airpura C600 air purifier and your path to clean air. With an extra-large carbon bed for maximum chemical absorption, the Airpura C600 air purifier uses pressure-sealed Hepa and carbon filter chambers to trap and sterilize dirty air and return it fresh and clear. Complete with 40 square feet of filtration surface and a variable speed motor, these carbon air purifiers claim a 95% Hepa efficiency, and will provide years of clean, clear air in your house, office, or workplace.