MM / IN
3 Ring Spacing
Louis Vuitton
Filofax
Gillio
Disc Bound
PO 
Pocket
81 x 120 MM
19 MM
PM - Small Ring
Pocket
Pocket
x
A6
A6
105 x 148 MM
38 MM x x
A6
x
PE
Personal
95 x 171 MM 
3.75 x 6.73 IN
50 MM
MM - Medium Ring
Personal
Medium
x
PW
Personal Wide
4.75 x 6.75 IN
50 MM x x x x
MH Mini Happy Planner 4.625 x 7 IN  x x x x 7 Discs
B6 B6  5.3 x 7IN
HA
Half Letter
5.5 x 8.5 IN
x Desk Agenda x x 8 Discs
A5
A5
148 x 210 MM
70 MM
GM - Large Ring
A5
A5
x
FC Franklin Covey Compact 4.25 x 6.75 IN x x x x x