Legend Plates The labelling plates (black with white inscription) have an adhesive layer on the back. The size of the labelling plates is 22 mm x 22 mm The inscriptions have upper case initial letters PHASE OUT NOTIFICATION This product is in obsolescence mode and is due for discontinuation by the manufacturer. We recommend that you review the new pushbutton range SIRIUS ACT which is the alternative range proposed by the manufacturer. Please refer to the 3SB3 / SIRIUS ACT cross-reference guide located in the technical reference section.