Measurements are shown height × width and refer to the compatible paper or insert, not the finished leather cover.
A7 — 125 × 82 mm (4.9 × 3.2 in) — six-ring mechanism
A6 — 171 × 95 mm (6.7 × 3.7 in) — six-ring mechanism
A5 — 210 × 148 mm (8.3 × 5.8 in) — six-ring mechanism
B5 — 255 × 180 mm (10.0 × 7.1 in) — choice of nine-ring or 26-ring mechanism
Paper and insert dimensions may vary slightly by manufacturer.