Product review (1 stars): NOT WORTH IT
Not worth it.  I followed the suggestion to turn the filter to keep it from drying out.  Good idea and worked well with original filter.  HOWEVER, the replacement filters, after less than a week, lost the rigidity of the side wall and caused the wicking tower to collapse.  RESULT:  the fan could not circulate the air around and throught the filter and the humidifier's efficacy was cut to about 25% of what the originals could do based upon the frequency which I needed to fill the water reservior.  Three of the original filters, by turning them, rinsing them and occasionally zapping them with a vinegar soak, lasted all of last year's humidifying system and did not collapse. They got calcified over time which I would expect from the high limestone content in my water.  These 'after factory' filters are poor subsititues and frustrating.  I'm going to bite the bullet and get the origninals.  Dang, and I still have one of the fakes left--just enough to get me through till my original shipment!
UPDATE: I really, really love my humidifier but original and knock off paper filters are for the birds.  I am trying to keep them alive and functioning.  Two things:  I have cut the poorly glued seam away from a damp wick and herring bone stitched it back together with a heavy duty thread or dental floss, my real go-to.  A quick round of slip stitch top and bottom will help keep the edges from fraying out.  I will make a wire support using a thin coat hanger to keep the wick from collapsing in on itself.  My idea is based on the plastic tripods that hold up the lids of hot delivery pizza.  I roll my damp wick and place it upright in a tumbler and fill it with vinegar, trying to keep the paper from becoming too encrusted with lime or brown deposits.  Then a swish in the sink in clear water. Is it a hassle? OF COURSE! but I can't see spending oodles to keep this thing going.  And BTW, after this second season, I will remove the fan unit to clean it and put a drop of oil on it.  That's what kills fans--accumulated dust and dander.  Gotta treat all investments like a car---periodic maintenance is a must.