Grease filters correspond to the original products. I had problems with my Hoover uh7400 overheating and shutting down. Did some homework and found that the problem with the vacuum cleaner was related to the filters. The cost of the original filters was slightly higher. So I decided to try Fette-Filter. Well, in all respects you must put five. I know I'll have to use them for about a month before evaluating them, but they seem to work just like the original filters. Liked it and placed a second order. The price was too good to pass up. I will try the subscriber in a month.