The 1550Z120BK is a black diecast aluminum enclosure designed for industrial and outdoor electrical applications requiring NEMA 4 and 4X protection ratings. The enclosure features internal dimensions of 163.14 mm length, 93.78 mm width, and 49.90 mm depth, with an average wall thickness of 3.00 mm, providing robust protection for sensitive equipment. The purchased assembly includes the box, lid, silicone gasket, and 4 cover screws, with mounting provisions for M4-0.7 machine screws and #6 self-tapping ground screws. The enclosure is UL listed and can be factory modified for milling, drilling, and printing to meet specific application requirements. Typical applications include outdoor control panels, junction boxes, and equipment housings where corrosion resistance and environmental sealing are essential.