Product review (5 stars): Needed replacements
I was not happy when unable to purchase this product locally anywhere. I was ecstatic to find this online, on sale, and with free shipping to boot!
  I use the Graco 4 gallon humidifier, looks nice in the family room, and only need one for 2 story house. The filter does last longer if you use distilled water. I hope these filters continue to be available in the future!