Michael, I believe print file makes a fold lock sleeve that also fits into the regular pages so you can get double protection.
Print file is great just watch the mil number, the higher numbers are thicker which seem more sturdy to me, the only ones I don't like from print file are the 70mm sleeves, they are paper thin and the plastic catches on the film edge and the holes are off center from the binder rings. They've told me they are working to fix this issue, but could be a while as 70mm isn't a priority.
Best of luck!
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