Bags for Electro Hygiene canister

[countryguy]

A few weeks ago I posted pics of the Royal Electro Hygiene canister that I picked up. It did not come with any extra bags and the bag in the unit is an open topped paper bag. Does anyone know what kind of replacement bags I could use? I'd be open to using a large enough size bag where I could just cut the collar off the bag as long as it would still fit the unit. Also a hepa type bag is preferred but a paper bag would do.

Thanks.

Gary