Product review (4 stars): title says filterS but this is for just ONE filter
Just to be clear, while the title of this item says filters this item is just one filter. That said, it is increasingly hard to find these locally. This really is less a filter and more a wick, but it works with my now 6 year old humidifier. I find if you use RO water the wick lasts about a month as long as you don't let it dry out. I imagine distilled water would work about the same.