HEPA-PLEAT II minipleat filters offer outstanding performance and energy cost saving characteristics. Our separatorless minipleat design allows much more filter media into the same area conventional corrugated separator filters occupy. More media = extended filter life and less static pressure. In fact, at a 100 F.P.M. velocity, measured volumetrically, a pressure drop as low as 0.19" W.G. is obtainable in cleanroom applications. Manufactured in hepa and ulpa efficiencies ranging up to and including 99.99999+% @ 0.12 microns. These advanced and versatile filters are DOP, PSL, scan and/or laser tested as required.