The company introduces a new series of fan-filter units to its "MicroPleat" line of HEPA and ULPA products. Three styles are offered: top-mounted control, roomside speed control, and roomside replaceable filter. All three styles are available with either aluminum or Kydex housings. A low-profile Kydex housing is available only 11 3/4-in. high. According to the company, efficiencies offered include 99.99% on 0.3 microns, and 99.995% on 0.12 microns.