Your Guide to Choosing Ring Binders

O Ring
View our range of ring binders here.
Ring and Post Binders Measurement Guide
Measuring Ring Capacity

D Ring
When measuring the ring capacity of a binder:
- Measuring the thickness of the spine will not give you an accurate measurement.
- For a correct size gauge it is recommended that the measurement is taken from the inside top of the fitting to the bottom.
- The greater the number of rings the greater the stability of your pages, preventing them from becoming damaged.

O Ring or College
Ring Types
O RING
19mm Diameter – approximate capacity 90 sheets of office paper
25mm Diameter – approximate capacity 125 sheets of office paper
38mm Diameter – approximate capacity 200 sheets of office paper
50mm Diameter – approximate capacity 250 sheets of office paper
D RING

D Ring
D Ring has 25% more capacity than O Ring.
16mm Diameter – approximate capacity 90 sheets of office paper
19mm Diameter – approximate capacity 125 sheets of office paper
25mm Diameter – approximate capacity 200 sheets of office paper
38mm Diameter – approximate capacity 250 sheets of office paper
50mm Diameter – approximate capacity 300 sheets of office paper
65mm Diameter – approximate capacity 350 sheets of office paper

D Ring High Cap
High capacity D Ring binders hold 20% more paper without increasing the binder size.
Lever Arch
Approximate capacity 375 sheets of office paper
Lever Arch Quickfile
Provides 25% wider opening and allows you to file from both left and right side
Ring spacing for O and D Ring Binder and Arch Files:

Lever Arch
All are measured from the centre of one hole to the centre of the next hole

View our range of ring binders here.