That doesnt appear to be a valid product number, can you advise the model number and what the product is your having difficultly fitting filters to?
Good afternoon, sorry for the delay in responding.
The rectangular filter fits in the rear of the vacuum, its the exhaust filter to stop dirt going into the air.
Please see attached image which shows how to remove the rear cover and replace the filter.
Please let me know if you need further assistance, with installing the filter.
Yes the way you have installed it is correct, appreciate if you can rate the service received so I may close the case.