I know this filter works because when I change it, within the 90 day recommended time, with its fine filter capabilities, it really does its job as the filter is grey with particles.
I absolutely love using Filtrete filters. I choose the Healthy Living product because it does and takes care of it all. They work so well I do not even have to dust the furniture anymore. Filtrete is worth every penny and is a time saver to boot.
I usually have used these in the past and recently purchased a different brand. I prefer these. They are better constructed and appear to better clear the air.
Decided to try this filter to see if it could remove household dust. For the last 9 years I have used the 1085 filters but they let too much dust through them. After the merry maids finished I would change the filter then test for dust for a week. These filters allowed dust to accumulate. Not good!