Johnson Hardware’s 200MD Multi Pass Hardware series is a track system that can handle individual sliding door panels with widths up to 48”, each weighing up to 300 pounds. The hardware also can be ordered to accommodate up to four panels side by side. The track, made of an extruded aluminum I-beam, can be specified up to 192" with special orders available. The series comes with four-wheel ball-bearing hangers with 1" wheels and a guide with steel-reinforced nylon posts. The track system is suitable for a range of uses. It can be substituted for a pocket door to separate kitchen and dining areas, used in a room that doubles as a home office and child’s play area, or can help separate areas in a loft. johnsonhardware.com