Envirco Unidirectional Flow Clean Bench Workstation HEPA MAC10 w/stand DownflowEnvirco Unidirectional Flow Clean Bench Workstation HEPA MAC10 Good used condition, just pulled from service and were in calibration by Simco at the time of removal and storage. All covers are included The stand on the left is the one included with this hood, we've sold the smaller hood and stand. Additional pictures available upon request, units are stored inside a climate controlled building and will be crated and shipped freight to a business with