A KFA is a container flat wagon. Commonly these are constructed using bogies reclaimed from other wagons such as TEA tankers. Built in Finland from the late 1980s onwards, the KFA has become a mainstay of the modern rail network, able to haul standard-sized intermodal shipping containers within the restricted loading gauge that has resulted from a continued reliance on Victorian invention.
At just over 60 feet long, the KFA can accommodate a raft of different containers from the standardised range, which tend to use the two main sizes of 40 feet and 20 feet. Be it three twenty-foot containers or a twenty-footer and a forty-footer, the KFA can haul them with ease.