Review on 🌬️ High-Quality Winix 114290 Replacement Filter F for U450 Air Purifier by Iris Swatson

In my opinion this filter cartridge is quite expensive as it needs to be replaced once a year but it is still worth the price as it works very well. Just make sure you order the correct part number for your machine. This part number should be located on a sticker on the inside of the front panel of your Winix computer near where the filter is inserted. It's an all-in-one filter, meaning that activated carbon and HEPA materials are packed into one cartridge.