This 3M Air-Mate HEPA Air Filter Unit 520-03-63 with Charging Station 520-03-73 is in good condition and was removed from a working environment. This item came from a local lab that had surplus equipment. We urge customers to view all photos as they show overall condition, included accessories and useful information. Sale of unit comes with a 30-day full money back guarantee return policy. Please feel free to contact us with any questions.