Unlike some other reviewers, the gaskets were included and fitted perfectly. However, unlike original Dyson filters, the yellow filter housing with built-in filter cannot be washed and the purple post-filter contains no activated carbon. Not much, especially since Dyson doesn't even sell targeted post filters, so you'll have to take what you can get. The supplied foam pre-filter can be washed like the original. The size of all filters was perfect and they all fit very well.