Large portable Air Filter. never really used mostly in storage. Designed for creating Neg air for Asbestos drywall removal etc. Have one section of flexible exhaust pipe. http://omnitecdesign.com/product/omniaire-2200c/ Also Have Injecta-dry hard wood floor drying equipment. $1300 obo... https://www.sycorp.ca/restoration/injectidry/injectidry-hp60-plus-wall-and-ceiling-package/ Paul