The Micro-Air® system is designed for cleaning welding smoke from ambient air, the company says. Incorporating a large selection of multi-stage media air cleaners, units can be set up in a variety of configurations to direct and capture plant air. Airborne welding smoke pollutants are significantly reduced, lowering equipment maintenance and wear, and increasing employee safety, says the company. Use of the Roto-Pulse™ cartridge cleaning system cleans the air filtration cartridges with up to 90% efficiency, for longer filter life, the manufacturer says. Micro Air, P.O. Box 1138, Wichita, KS 67201; 316-943-2351; 316-943-2717 (fax); firstname.lastname@example.org (e-mail).