Patented Color Check Stripe fades from purple to red as an indiacation of when the filter needs to be changed!
These Holmesreg; humidifier wick replacement filters fit Holmesreg; models BCM5520RC, HM630, HM729, HM600RC, HM1405RC,
HM4600, HM6000, HM6000RCTC, HM6005, HM6600, HM7203, HM7203RC, HM7203RCU, HM7204, HM7305, HM7305RC, HM7305RCU, HM7306,
HM7306RC, HM7405, HM7405RC, HM7405RCU, and HM7808. They measure approximately 5.25 x 7.63 x 1.25. There are 3 wick
filters per box. Features Microban antimicrobial protection! For optimum performance, replace filter at the beginning of
each season or every 2 months depending on use. This is an aftermarket filter.