The bag...
fr standard commercial Sanitaires come in four basic versions:
1)dirt cup which you now have
2)shake out bag
3) zippered outer bag for F&G style paper inserts (pictured)
4) zippered outer bag for ST style paper inserts
You want number 3 or 4. F&G type, number 3, is what i link to below. Number 4, ST type, is somewhat better performance but at a much great cost for the outer bag (and the inner bags over time) because as far as i know it's only available from Sanitaire whereas the F&G style is available widely in generic form.
You have to be a little handy with a screw driver to install the new outer (zippered bag).
[URL unfurl="true"]http://www.vacpartswarehouse.com/ProductDetails.asp?ProductCode=14335%2D3[/URL]
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