My Dyson DC07 bought in 2007 works like new! The old filter literally disintegrated when I tried to take it off to wash, which I rarely did. Vacuum didn't collect anything and thought about a new one, but decided to try this solution first. I was amazed at how the new filter changed. I have just ordered 2 more to have on hand when they are discontinued. This is Dyson, not a generic made specifically for Dyson. I am 100% satisfied with the filter and the seller.