Honeywell Universal Air Cleaner Prefilter (2 uses) - 8 Pack
![](https://s.turbifycdn.com/aah/allergybegone/honeywell-universal-air-cleaner-prefilter-2-uses-8-pack-30.jpg)
Fits Honeywell model 17400.
It takes less than five minutes to change the pre-filter.
This filter is larger (taller) than it needs to be for your machine. You simply trim the filter (and it's got pre-made perforations) to the height of your machine.
Replacing the pre-filter at least every three months is recommended.