Looking for 8 1/2 x 11 1-pocket RIGID sheets for binders

I have seen 8x10 autos in these from time to time. Anyone know where to find? I think it is a good idea to have these rigid sheets in fronts/backs of binders to make sure no ring marks get on the cards. Where do you get them? any help is appreciated...
Currently collecting all sports HOF Rookie Cards graded by PSA...for my sons Jayce & Luke.
Successful dealings with: ChiSoxCardboard,
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Successful dealings with: ChiSoxCardboard,
lbcoach20, ShootyBabitt, cincyredlegs, pclpads, jwgators, hoopguru33, mphilking, daverat, Hallco, corvette1340, 8irvin8, Pre72, Estil, BigDaddyBowman, al032184. 1966CUDA, gwinny, samspop
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Successful dealings with: ChiSoxCardboard,
lbcoach20, ShootyBabitt, cincyredlegs, pclpads, jwgators, hoopguru33, mphilking, daverat, Hallco, corvette1340, 8irvin8, Pre72, Estil, BigDaddyBowman, al032184. 1966CUDA, gwinny, samspop
Commissions
Check out my Facebook page