Use SS-MAC units with tool covers, miniature clean booths, buffer booths, conveyer hoods, and other minienvironments. SS-MAC units are available in four convenient sizes to meet your air volume requirements, and all may be used for exhaust or intake. They may be mounted horizontally, vertically, or upside-down to meet your space and dimensional needs. All units come standard with a HEPA filter (99.99% efficient @ 0.3 micron particulate) or a ULPA filter (99.999% efficient @ 0.12 micron particulate) as an option. A variable speed control is available as an option on all models.