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Indoor air quality on railroad passenger cars, transit commuter cars, buses and airplanes is a key environmental issue. Modes of transportation can exhibit the same signs of “sick” tendencies as 30 percent of all commercial buildings. Protect the health and comfort of your passengers and crew with AAF Filtration products treated with Intersept, an EPA-approved broad spectrum antimicrobial, the company says. Intersept is designed to inhibit the growth of both gram-positive and gram-negative bacteria and fungi in ventilation systems, and in the filters themselves. Intersept is available in a wide range of filters manufactured by AAF. AAF International is NAPM certified.