Old Mark VII vacs

[Carwash Chris]

Does anybody remember the old old old style Mark VII vacuums that were fiberglass and square? Well, I am looking for the filters for these. I have tried the usual places (kleenrite, Windtrax, etc) with no luck. Any help will be appreciated. Thanks.

 

[pitzerwm]

Just a thought, is the material used for these filters available some place? It would be easy to make them, I'd think if you could find the material.