On GCI coaches, a side corridor was provided, at the inconvenience of reducing seating capacity; from 96 to 80 in 3rd class. Most of them had an open platform and a toilet at the other end but on some cars the toilet was omitted and replaced by a second platform and a few 3rd class cars had both a toilet and an enclosed platform (fitted with folding seats). The name I in the name GCI was indicating interconnection.
On GCI coaches, a side corridor was added to improve passenger flow, at the expense of reducing seating capacity from 96 to 80 in 3rd class. Most coaches had an open platform and a toilet at one end, but some lacked a toilet and instead had a second platform and a few third-class cars had both a toilet and an enclosed platform with folding seats. The letter "I" in the name GCI indicated interconnection between different sections of the train.