Product review (2 stars): Poor Substitute for Original
The filters I ordered are generic filters designed to fit in my ReliOn humidifier.  First I would like to say the seller shipped them immediately and I received them within two days.  No issue there.  The product, however, is of poor quality.  The original filters that came with the humidifier lasted for months and months of daily usage.  I ordered 4 of these generic filters some 6 weeks ago and have already gone through all four.  At first they work perfectly.  However, after about a week they disintegrate or collapse under their own weight when wet.  And as others have said they are a touch smaller than the filters that came with the humidifier.  I cannot recommend these filters and I will try something else going forward.