This is a pair of industrial strength air purifiers that were pulled from Mullan Station in Missoula by Waste Less Works. Draws 4.2 Amps at 120V, 60 Hz. Manufactured by Pollution Research / Matrix Air in 2001. Would be great in a wood shop. Filters will need to be replaced. Price is $250 for each unit.

Pollution Research 10.0 Fm Ceiling Flush Mount Air Cleaner/Smoke Eaters