Check the listing for details. Thermo Scientific CO2 Backup System for Freezers TSX, RLE, 89000, HLE, TLE. Condition: New – Open box. Listed at 3299.99 USD. New, Thermo Fisher Scientific Co2 system back up for freezers. The original box had some damage so will be repackage prior to shipping. I purchase surplus and have no further information. Please view pictures as part of your description. **Please feel free to ask any questions you may have. I will accept returns and my 100% rating is very important, if you feel the need to leave negative feedback please contact me beforehand, so we can discuss it. I'm sure we can come to an agreement.**Free shipping items returned WILL NOT receive a 100% refund for reasons unrelated to my listing, i.e. doesn't fit, changed mind, etc. Refund will be total paid by buyer - (minus) actual shipping cost I paid. **I describe my items for sale/bid the best that I can. I will never intentionally misrepresent anything I have listed. **USPS or Fed Ex shipping dependent on price. **Feedback is greatly appreciated.