The versatile 46-pound HEPA-AIRE PAS600HC Portable Air Scrubber from Abatement Technologies® features variable airflow control, with peak airflow of 600 cfm. Yet, its amperage draw is so low that multiple units can be safely daisy-chained on one 15 amp circuit via the built-in GFCI-protected duplex receptacles. The PAS600HC Portable Air Scrubber has several filter stages to remove airborne particles and odors: ■ Stage 1 - Inexpensive 1" FIBER-TRAPPER® 1.0 pre-filter ■ Stage 2 - 2" pleated particulate pre-filter ■ Optional stage 2 - 2" high-capacity VAPOR-LOCK® carbon filter for odors ■ HEPA filter - Tested and certified to 99.97% minimum efficiency @ 0.3 microns