Custom Window Systems windows parts

Is the metal channel, not including the nylon fittings, 36" long? If so, I believe you need either our S380-36 or S385-36. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. In either case, choose a stamp option of 3550.