hqrp 4-pack humidifier wick filter compatible with relion wf813 fits relion rcm832 rcm-832 rcm-832n, equate eq-2119-ul eqwf813 humidifiers hqrp compatible with relion rcm832 / rcm-832 / rcm-832n humidifiers; <br>compatible with equate eqwf-813 / eq-2119-ul / eqwf813 humidifiers. <br>replacement for part # wf813. <p>hqrp humidifier filter features honeycomb filtration to trap mineral pollutants found in water. <br>for optimum performance, replace filter at the beginning of each season or every 2 months depending on use.