as can be seen in the above picture and the one below, the system wasnt actually that good at retaining dust, with a proportion of dust sucked in by the cleaner, escaping through the filter and back into the atmosphere - hence the nice layer of sust on the grilles in front of the filter.
The filters were fiddly to fit and any inaccuracies in the fitting would produce gaps, with consequential leakage of dust.
The Permabag system will be covered in greater detail, when we reach the Turbomasters!
Just a note again on this model:
the U2602 Total System was still in production and appeared in the brochures alongside the 1991 series of models and remained on sale into the mid 90's.
This model replaced the U2724 in the mid 1990s and, in its Venus Blue and Dijon Grey version, was the last modification to the CORE range of models....
In Stellar Red and Dijon Grey, this was the Mail order only version of model U2806 and came with a complimentary box of tools.
The machine below is virtually as new and came in its original box...