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1) These are friggin hard to find locally. 2) Many of them are the "wide" version that are more commonly found in customized binders specially sold for the purpose, and don't fit well in a normal binder. (however, some ARE much closer to an 8.5x11)

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width

One way to tell whether a page is "wide" or not is whether the CD tucks in towards the binding past the holes or not. Wide pages tend to not do this. When the slit is on the top side of CD, this also prevents the holes from tucking in between the two CDs.