Thetford C263CS Standard Bowl Cassette ToiletThe c263 range of cassette toilets from thetford provide permanent toilet solutions combined with the convenience of a removable wasteholding tank and waste level indicator. Toilets in the thetford c263 range features a removable wasteholding tank are accessed via a small door on the outside of your vehicle for removal and emptying cleaning. The c263s model features an external flush controller and the c263cs model features a built in rear mounted