The Tri-Flow MERV 16 (minimum efficiency reporting value) filter lifetimes are three to five times longer than that of conventional bag or cartridge-type filters. In addition, the active filtration area is two to three times greater, and the filter maintains low operating pressure drop throughout its service life. The self-cleaning Tri-Flow filter can achieve efficiencies of 99.999% for particles of size 0.5 µm or larger. — Tri-Mer Corp., Owasso, Mich.