Product Information
PF-HM400-W Austin Air You can extend the life of your Permafilt Pre-Filter by vacuuming the outside of your machine about once a month with the brush attachment of your vacuum cleaner.
The Austin Air Standard Size Permafilt Pre-Filter is the first stage of filtration for any standard size Austin Air purifier. Its cotton weave traps particles you can see without a microscope, like dust and pet hair.
The Permafilt Pre-Filter lasts an average of 1 - 2 years.