Product review (5 stars): easy to install in model, works great for its life span-about a month
I tried calling the Holms company to order these directly and they don't even sell them anymore, but I was lucky enough to find some here. These work for 2 different humidifiers I own and I really hope Amazon keeps stocking these. They are easy to replace in the humidifiers, but only last around a month before dust and pet hair and other stuff starts blocking the holes for the water to go through and they turn black. However, that seems about the life of most filters, so not a huge deal. I live in the cold Midwest and run humidifiers generally from October through march as they help put needed moisture in the house, which makes easier to breath and cuts down on the static electricity. I just reordered another set and will continue to order these as long as Amazon stocks them, probably stocking up for next winter.