Product review (5 stars): Reduce unit Cost  Maintenance with these Filters
I have been using this filter for about one month.  Its performance continues to be consistent, emptying both humidifer tanks twice in twenty-four hours, when fans are set to Medium velocity.  I have not removed to rinse and flip as Honeywell suggests for maximum use life.  I had attempted to do this with the Honeywell-branded filter that was included with humidifier at time of purchase, and with the first set of replacement filters that I purchased as replacements, also Honeywell brand.  These filters all lacked the structural integrity for more than one attempt at removing, rinsing and reuse, as they literally fell to pieces when handled.  This filter has, what I believe to be, an expanded aluminum mesh, bonded and centered in the fiber media and girdling the filter, providing significantly more strength/stability when compared to the OEM unit.  I feel it would allow the filter to be removed, rinsed and inverted more than once w/o falling apart.  However, this is not a convenient task and as long as I obtain superior performance to the OEM, I am satisfied.  Also, I did initially use the recommended Protec Humidifier Balls which worked well to prevent odor and the buildup of mold, mildew and algae, but are expensive.  I now use a drop of chlorine bleach per tank each time I refill and find that this suppresses odor and discoloration as well as does the Protec antimicrobial.