Honeywell Aluminum Mesh Pre-Filters

(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.)