This filter fits my momentum sweeper perfectly. I bought two of these so I have a spare when I need it and the price is right. Not sure why some reviewers thought these filters were made for other vacuums since the packaging says "Bissell". You open the filter housing, pull out the old filter and insert the new one. It fits snugly but is easy to install. It is also important to remember to remove and clean the spongy filter located at the front of the sweeper under the waste bin. Once you've taken care of both filters, you're done. I am very happy with the fit and quality of this filter.