The "Ultrasolve" mini-pleat air filter is only 4 inches deep and offers low-pressure drop performance, 40 percent lower than comparable filters, according to the manufacturer. The feature is ideal for commercial, institutional, medical/health care, food processing, electronics, and other facilities where indoor air quality is important. The filter is available in three efficiencies: MERV 11, 13, and 14 based on ASHRAE 52.2. The filter uses polypropylene media with high strength, low resistance to air flow, and excellent moisture resistance in high-humidity applications.

Camfil Farr, 1 N. Corporate Drive, Riverdale, NJ 07457; (973) 616-7300; fax (973) 616-7771.