1/2 In. plastic box connector accommodates a single run of 14-2 to 10-3 cable, double run of 14-2 to 12-2 cable, 1 round cord 0.300 In. to 0.600 In. diameter, or (2) 0.300 In. diameter round cords going into a standard. Trade Size: 1/2 In. UL (Underwriter's Laboratories) listed. WARNING: This product can expose you to chemicals, including antimony trioxide which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov. -