Peak Scientific 2004 Filter Model: A20RAC, Element Model E361RACPeak Scientific 2004 Filter Model: A20RAC, Element Model E361RAC Grade B. Functional used gas generator filter sourced from hospital surplus. Ideal for biomedical technicians, clinical resellers, and facilities needing a working unit. Reuse Medical is a Service Disabled Veteran Owned Small Business (SDVOSB) supplying hospital surplus equipment to biomedical techs, retailers, and healthcare facilities. Ships from Fresno, CA. Condition: Used