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Size refers to D-Ring capacity, NOT the width of binder spine. Our binders are wider than industry supplied binders.
The below easy to use guide is meant to provide you with a conservative estimate and eliminate confusion.
This method takes into account collecting variables such as different thickness/gauge of pocket sheet brands, placing cards one per pocket or back to back or if you store multiples. This also eliminates the need to exchange sizes.
You'll find if you followed this simple guideline, life will be grand!