https://asheville.craigslist.org/hab/d/asheville-honeywell-enviracaire-hepa/7913400046.html
Honeywell Enviracaire hepa air purifier 3 speed model 13500 - health and beauty - by owner -...
Used round enviracaire 3 speed air purifier/filter. It is a 250 CFM (cubic feet per minute) mover. Filter seems to be in good shape and cartridge looks good...