Holmes "E" Humidifier Filter 3 Pack, HWF100-UC3

Improves efficiency of the humidifier | Extended filter life with help of reinforce outer layer | Extends product life as less mineral deposits will attach to the unit | Install at the beginning of each season, replacing every 2 to 4 weeks or as needed | Works with models HM630, SCM630, BCM646, HM7808, SCM7808, BCM7205, HCM730, BCM7305, HCM729G