For your reference, we've included capacities of 20lb. bond paper in the table below.

Round Ring

 Sheet Capacity
0.5" 130
0.75" 154
1" 203
1.5" 314
2" 408
2.5" 500
3" 600

HARDWARE

One of the first decisions you will make for a binder is the size of the rings. It determines how many pages a binder can comfortably contain and how wide the binder spine will be. This is how you should measure:

Round Ring D-Ring Angle D-Ring
Round Ring D-Ring

The ring diagrams shown above are those most commonly used -- with the round ring used most of all. remember, the size of the ring determines the width of the spine: i.e. a binder with a 1" ring will have a spine measuring approximately 1 1/2".

It is important to know how many pages your binder is required to hold. And, if the number of pages will grow with usage. Hardware is available in a wide variety of colors, capacities, and sheet sizes.