Product review (3 stars): Not so great
I was kind of disappointed.  I ordered what I thought were the same replacement filters I got last year.  These are smaller and not as thick.  They still work, but not nearly as well.  They don't seem to wick up as much water as the other kind and as a result I'm running my humidifier longer with less moisture put out.  I was desperate though and I opened the package, so I used them.  I won't order these again.  I have EXTREMELY hard water and have to change my filters about once a month.  These do seem to last about the same but I'm just not super happy with them.