Due to COVID we are having trouble getting filters from our suppliers as there is a national filter shortage. There will be a delay in getting the filters to you, and we do not know at this time when we will be able to ship them. Please call the office at 303-423-1982 for more information.
One set of two pre-filters fits Honeywell 16"x25" or 20"x25" Electronic Air Cleaners, i.e. F300
(We recommend washing Aluminum Mesh Pre-Filters every two months, at the same time as the Electronic Air Cleaner's cells. Just vacuum loose dirt off the pre-filter and wash it off with water.)