Product review (5 stars): Very happy and glad I got 3 at a time
Already feel these are better than the more expensive Honeywell single filter replacement one I bought for my dbl tank house humidifier.  These seem well built, soak up water great, and have this nice metal skeleton inside of it I think will help it maintain its structure. Also this one has a finer outside material which I think will filter air better. Overall, very happy I got this 3-pack but will update if anything changes after a month of use. Oh, and buy in bulk because these need replacing every 4-6 weeks or else you are just blowing air through a 50% dry, smelly filter.