Dimension (in) A4 B5 A5
Height 11.85 9.69 8.46
Width (closed) 8.54 6.93 6.10
Width (open) 16.77 13.62 11.89
Depth 0.47 0.47 0.47

Dimension (cm) A4 B5 A5
Height 30.10 24.60 21.50
Width (closed) 21.70 17.60 15.50
Width (open) 42.60 34.60 30.20
Depth 1.20 1.20 1.20