The company has published this full-color, 20-page catalog, which contains information regarding its ductless filtering systems and enclosures. According to the manufacturer, its fume/particle extraction devices are designed to accept a series of filters, including aluminum or dacron prefilters, HEPA particulate filters, plus activated carbon or specially treated carbon for organics, acids, and mercury vapors. Accessories are also in the catalog. — Airfiltronix Corp. Clifton, NJ