In 1993 sixteen RCH wagons had their roofs removed and were reclassified RCC. They had no side doors but retained the end doors. They were 24048, 24102, 24125, 24133, 24140, 24184, 24187, 24216, 24246, 24315, 24338, 24342, 24370, 24372, 24379, 24418. I'm afraid I don't know anything more about this class.