Product review (1 stars): Worked great for about 4-days.  Do Not Last. Poor Wicking
These filters are non OEM and only last about 4-days of continuous 24x7 use. Worked great for the first 3-days, then poor wicking. I tried presoaking and resoaking. Not sure if it's a persistent quality issue.  I have three continuously running cool-air Humidifiers, each using two of these wicking filters. Of the 6 filters, only two are still wicking enough to move the needle on the Humidifier after 4-days.  The Holmes filters that came with the Humidifiers lasted months without failing.  Strongly recommend looking elsewhere for filter replacements.