Features:

• Honeywell/Enviracaire Charcoal Prefltrs #34002 (2 pk) fits 13503(EV35B), 13520, 13523, 13525
  Honeywell 52500, 63200, 63500

Editor Reviews:

Product Description:
Featuring HEPA Filters, CPZ Filters and Charcoal Prefilters for Enviracaire models. These filters are designed to remove harmful allergens such as dust mites, animal dander, pollen, mold spores, bacteria and harmful fibers. They also eliminate odors and tobacco smoke. They are ideal for those suffering from allergies, asthma, respiratory problems and environmental concerns.

Rating : - Not quite as advertised
Confirmed observation by previous reviewer - not the same as a Honeywell-branded filter - about half as thick. Advertising a little misleading which does imply a "Honeywell/Enviracaire" prefilter. I am anticipating my HEPA filter will now clog more quickly unless I replace these about twice as often as I'm used to. The ad should not say "Honeywell" in it.