White marker sheets designed for terminal blocks, unlabeled but customizable with options such as BLUEMARK ID COLOR, BLUEMARK ID, BLUEMARK CLED, PLOTMARK, and CMS-P1-PLOTTER. These markers snap into the tall groove of terminal blocks with a width of 10.2 mm. Each sheet features a lettering field measuring 9.6 x 10.5 mm and contains 48 individual labels for easy identification.