The MR-50LW+ is a dual-purpose vertical and horizontal type plastic case designed for the MR series 50-contact rectangular connectors. This case features a spring lock mechanism for secure connector retention and includes a cable clamp, cap, and small-sized Phillips head screws with hexagon nuts for assembly. The case body accommodates both vertical and horizontal mounting orientations, making it suitable for space-constrained applications in factory automation, communications equipment, data terminal equipment, instrumentation, and medical equipment. With dimensions of 67.9 mm (A) × 20 mm (B) and a depth of 66.1 mm (C), the MR-50LW+ provides a compact, robust solution that combines the dual-mechanism design (screws and spring-locks) to withstand shock and environmental stress while maintaining high-density connector integration.