The rings that gave name to our Columbus albums. The Columbus album comes with 20 photo sheets, bound with 20 mm rings. If you want to fill the album with more sheets, you can buy 25, 38 or 50 mm rings. Additional 20 mm rings are also available. You can also use the rings to bind loose sheets.
25 mm ring = max 40 sheets (approx. 30 sheets mounted photos) 32 mm ring = max 60 sheets (approx. 45 sheets mounted photos)
38 mm ring = max 80 sheets (approx. 60 sheets mounted photos)
50 mm ring = max 120 sheets (approx. 80 sheets mounted photos)