Dymo Compatible 30251 Address Labels provide a great option for anyone looking for high quality, affordable labels. These bright white, self-adhesive labels measure 1-1/8” x 3-1/2” (28 x 89mm) and are 100% compatible with any of the Dymo LabelWriter series printers. Because they use thermal printing technology, you never need to worry about purchasing ink or toner, saving you both money and inconvenience. labels are indistinguishable from the Dymo 30251 labels and are available for a fraction of the price and. These labels can also be customized with your logo or other information to meet your specific needs.