Phoenix Contact 0830459 A warning label for a roll can be identified by its yellow color and lack of a label. The product itself can be labeled with various models such as THERMOMARK E.300/D600 or other similar models, including ROLL 2.0, X1, and ROLLMASTER 300/600. This adhesive-backed roll has no actual diameter measurement but comes in batches of 500, featuring a text field with dimensions of 37mm high and 74mm wide.