GM80 IVT1000CR Disposable Fleece Bag Refills Retains 99.7% @ 3 microns * For standard vacuum cleaner - GM80 and IVT1000CR *** REPLACES NI-81620000 Paper Bags *** NCI offers many cleanroom vacuum accessories to fit your specific application! Don't see what you're looking for? Please Contact NCI with your request.