These cut to size pre filters are great and can work on many different models of air purifiers. Depending on your air purifier size, this filter can be cut to make anywhere between 1-12 separate filters. There’s a chart on the back of the box to help you figure out how many you can make for each filter model. It comes with a template to cut them the correct size. These filters are great for deodorizing, capture lint and dust, and absorbing product fumes.