Thanks for checking. I have a friend who has the old WT 8/5 with the 64 liter drum and the depth of the machine is 714 mm. If they left the same drum for 9/6, I think it’s too small to dry a 6kg load. The old 7/4 kg WT used the 59 litre drum. Bosch use a 70 litre drum for their 10/6 kg washer dryers