Trion Inc. is engaged in the design, manufacture, sale and distribution of equipment to improve indoor air quality (IAQ). The Company's Consumer Products group includes products that are intended for home use, such as free standing appliance tabletop and console air cleaners, as well as residential whole-house air cleaners, air filters and humidifiers that are integrated into home owner's heating, ventilation and air conditioning systems. The Engineered Products group designs, manufactures and sells indoor air quality and dust collection equipment. Through its subsidiary, Envirco, the Company uses high efficiency particulate arrestance and ultra low particulate arrestance technologies in manufacturing contamination control air systems and filters for applications including cleanrooms in the semiconductor and microelectronics industries, and systems to provide hospitals with clean environments for surgery rooms, cancer research, patient isolation and sterile medication preparation. (Source: 10-K)