These bags fit all the Optima Vacuum Cleaners. The Optima is made by HMI (Health Mor Industries), which is the same company that makes the Filter Queen brand.
The Package contains 6 bags, 1 Charcoal Filter, 1 Secondary Filter, and 1 bag clip.
This bag is no longer being sold by filter queen. You must call Filter Queen @ 1 800 662 2471 and they will retro fit the vacuum