[Compatible Models]The humidifier replacement filters are compatible with WF813; ReliOn WF813 RCM-832 RCM-832N; WF813 RWF13 PCWF813 PCWF-813 PCCM-832N PCCM-840; EQWF813 EQ-2119-UL; SH100 & SH200; also compatible with / Robitussin humidifier models -830, -832, AC-813, ACR-832, D13-C, -832, etc. [What You Get]4 Pack WF813 Humidifier Filter Replacement for ReliOn RCM-832 RCM-832N, PCWF813 PCWF-813 PCCM-840 PCCM-832N, EQWF813 EQ 2119-UL Cool Mist Humidifier Filters. [High Quality]Made of environmentally friendly professional import filter paper to optimal performance and a healthy lifestyle. [Easy To Install]Simply your old filter and put this one in its place. For best results, we advise you to fill the humidifier tank with distilled water instead of hard water. Material: Filter cotton colour: white Package Contents: 4 x humidifier filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.