This unique wagon was converted from standard GC class wagon 9975 in 1932 for bulk wheat traffic at the same time as K class wagons were being converted to class KW and RB class wagons were also being converted to class RBW. In each case the sides were increased in height and a ridgepole added. No more GC conversions were carried out and GCW 9975 was written off in 1956.	No picture available
The WAGR outline diagram is shown below.