<b>Filters Replacement Compatible with Honeywell HAC-504,HAC-504AW, Filter A</b><br><br> Package included 4 pack replacement humidifier filters.<br><br> Compatible with the following Models: <br> ➤For HCM-300 Series: HCM-300T, HCM-305T, HCM-305T-CST, HCM-310T, HCM-315T, HCM-350, HCM-350B, HCM-350B-CST, HCM-350W.<br> ➤HCM-450BCST. <br> ➤For HCM-500 Series: HCM-530, HCM-535, HCM-535-20, HCM-540, HCM-550, HCM-550-19, HCM-551, HCM-560. <br> ➤For HCM-600 Series: HCM-630, HCM-631, HCM-632, HCM-632TG, HCM-635, HCM-640BW, HCM-645, HCM-646, HCM-650.<br> ➤For HCM-700 Series: HCM-710. <br> ➤For HCM-1000 Series: HCM-1000, HCM-1000C, HCM-1010.<br> ➤For HCM-2000 Series: HCM-2000C, HCM-2001, HCM-2002, HCM-2020, HCM-2050, HCM-2051, HCM2052.<br> ➤For HEV-312, HEV-355.<br> ➤Compare to part HAC-504, HAC-504AW, HAC504V1.<br>