The MJB002503 J-Box is part of the most comprehensive mounting system available. Machined entirely from solid brass with a removable top assembly is a low-voltage lighting junction box combined with an electronic transformer listed to UL STANDARD: 1838. This unit can be buried within 1” of the top, even in exterior wet locations. The MJB002503 adapts from line voltage feed (120v) to most of our low voltage (12v) fixtures and most 12v fixtures from other manufacturers. The MJB002503 accommodates two 1/2” bottom entry conduits allowing for 12v output for a second fixture up to 10’ away or 120v through wiring.