This Clean Rooms International SAM 22 MS 12100 Microsound Fan Filter Unit is in used condition, has been tested and is guaranteed to be fully functional. These units came from a large pharmaceutical company that had surplus equipment. Exterior shows some signs of storage include minor dents. We urge customers to view all photos as they show overall condition, included accessories and useful information. At time of listing we have a quantity of (4) units that are in similar condition and have been fully tested. Please feel free to contact us with any questions. Please Note: Due to size of unit, the shipping option has been selected as freight. Shipping cost and method will be determined by buyer location. SAM MicroSound Fan Filter Units include a 99.99% efficient HEPA filter, 30% ASHRAE pleated type prefilter, seismic clip suspension points, safety switch which disables the unit while servicing, and solid state variable speed control with RFI suppression, allowing the airflow to be fine tuned. Housings are fabricated from steel with a white powdercoat finish. For additional information please see last three photos.