The AF501 portable HEPA air filter is General Equipment Company’s latest addition to its AIR-SCRUB-R line. This compact, efficient unit delivers air scrubbing/negative pressure air movement capabilities, as well as outstanding air filtration in a wide range of industrial and construction-related job applications in nonhazardous locations. Featuring a two-stage design, the AF501 includes a 30% pre-filter and a 99.97 % efficient HEPA secondary filter, capable of capturing allergens and other particles as small as 0.3 microns. The pre-filter can be replaced with an optional activated carbon filter to help absorb a variety of VOCs, smoke and other noxious odors and … Read more