This International Portland Corporation Clean Air Station Model 350 2' x 2' with Tray is in very good condition and functions 100%. it came from a local lab that was upgrading equipment. We can accept pay-pal or your credit card. Please email me with any questions. I have two available take your pick These models provide the user with a class 100 positive pressure environment wherever localized clean air is required. Typical applications are raw material sampling and aseptic connections for bioreactors and fermenters. The blower box contains a deep media HEPA filter that meets Federal Standard 209 (0.3 microns @ 99.99% efficiency). The swivel output head (provides vertical or horizontal airflow), provided with either a 2? x 2? or 2? x 4? size contains a membrane diffuser to provide uniform airflow and includes a detachable clear vinyl work area curtain that is attached using an airtight method. 2' x 2' with Tray FEATURES O.3 micron HEPA Filter Class 100 (ISO 14644-1 Class 5) Air Detachable Vinyl Curtain Adjustable Air Speed Adjustable Height and Swivel Output Head 95% Efficient Bag Pre-filter Convertible 2? x 2? or 2? x 4? Output Head