Measurements: length taken from longest point, width taken from the bottom.
Part number: these numbers are Thetford's part numbers
Previous part number: Some thetford parts have been discontinued and replaced and therefore have a different part number.
Casting number: on the bottom of the door bin
Fridge model: all door bins fit multiple fridges and some will only fit at top or bottom. Check your casting number where possible and measurements for accuracy. If your model is not listed this does not mean one of these will not fit.
These are not all of the door bins available for Thetford fridges, we have more coming from the UK.