Thetford Toilet Part - C400 Cassette Mechanism LHThrough frequent use, with time or by accident parts of your toilet cassette might break. Instead of having to replace the whole cassette, simply replace the part that is broken. This is a replacement blade mechanism for your Thetford C400 LH toilet cassette Benefits & Features Fits Thetford C400 toilet cassette Replacement LH mechanism Does not include sliding cover for blade mechanism