Class 9 DOT hazard labels measure 4" x 4 " and are white with black vertical stripes featured across the top half of the label. Class 9 labels do not have a specific warning group, but are rather used to represent materials that may present a hazard during transport, but which is not included in any other hazard class. This may include things like hazardous substances, elevated temperature material, hazardous wastes, and marine pollutants. For additional savings on class 9 hazard labels, purchase 5 or more rolls.