Features:

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

Editor Reviews:

Product Description:
Honeywell Enviracaire 34002 Carbon charcoal pre-filter 2-pack Original part number 34002, EV-35B (EV35B) For models 13503, 13520, 13523, 13525, 52500, 63200, 63500

Rating : - 3rd part product- flimsy in comparison to original
Though I'd save money and buy these. They are about half as thick as the original charcoal prefilter, so I doubt they will do as an effective job or last as long as the originals.