Where to buy slip cases for Ultra Pro or other brand Album and Binders?

I am looking to fill up a 3 inch thick UltraPro binder to capacity. If I store it vertically, I worry about the dust problem. I want to store it in a bookcase, so it will be easy to access for enjoyment and leave the room looking neat. I have a high end binder for stamps and it already came with its own slip case. I like the concept and feel that I will be just as pleased if I can provide that same protection to my baseball cards in the 9-pocket sheets.
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"So many of our DREAMS at first seem impossible, then they seem improbable, and then, when we SUMMON THE WILL they soon become INEVITABLE "- Christopher Reeve
BST: Tennessebanker, Downtown1974, LarkinCollector, nendee
BST: Tennessebanker, Downtown1974, LarkinCollector, nendee
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Always looking for Topps Salesman Samples, pre '51 unopened packs, E90-2, E91a, N690 Kalamazoo Bats, and T204 Square Frame Ramly's
On a side note stick to just one color.
Dave
1957 Topps 99% 7.40 GPA
Hank Aaron Basic PSA 7-8(75%)