4218. Square Format Label Set for Battery Management Panels. 30 Black DC Labels. 30 Common DC Labels. Included with Batery Main Distribution Panels. Reinforced, weatherproof material. Used on WeatherDeck Waterproof Panels. Used on Battery Management Panels. Used on 360 panel system. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.