Safety sign size guide

Many factors can Influence someone's ability to read a sign, which are covered in BS ISO 3864-1. The distance a person will be required to view the sign, the angle they are viewing , lighting, and even if they have impaired vision. Signs also have to be visible and not stuck behind furniture and doors.

Safety sign size guide

Landscape sizes

G 300 x 100mm, L 450x 150mm, M 600 x 200mm

Portrait sizes

G 100 x 300mm, L 150 x 450mm, M 200 x 600mm

 The chart above may offer some guidance, but you should consult BS ISO 3864-1 for more definitive information.