Cleaning the Honeywell Enviracaire 50250 Air Purifier Pre-filter
I don't know how "legit" it is to do this, but I had read that you could extend the life of the pre-filter by vacuuming up the dust ...
Allerair 5000-Dx-Vocarb-Carbon Air Purifier
5000-Dx-Vocarb-Carbon Air Purifier. Intended for heavy-duty, all-purpose air purification purposes, the Allerair 5000 DX air purifier features an ...