Designed for 12V Systems. Meets the requirements of SAE/DOT/FMVSS/CMVSS standards when properly installed. Waterproof construction, low profile design. Acrylic lens, corrosion proof plastic housing. Screw-on lens, easy to change bulbs. Includes separate ground wire with eyelet. Mount on 2" centers. Size: 7.875" x 3.25" x 2.875"