For doors 1-3/8 thick, weighing up to 50 pounds Aluminum fascia track Convex track rails provide one point contact between wheel and track Hangers includes: 7/8 diameter molded nylon machine turned wheel with three point locking plate Adjustable hangers and door guide Nylon 1 high guide posts and swivel 14-16 gauge zinc dichromate plated steel parts Set contents: (1) 2200F track; (4) 2238 hangers; (1) 2135 door guide and (2) 15 pulls Track In=48 Max Door Size In=24 x 2