Product review (1 stars): New and improved...Don't be fooled
The new and improved filters IMHO is more about cost savings than a better filter.  The new improved all white filters without the outer blue lining protec are junk.

The outer blue lining not only added the Antimicrobial Treatment but it strengthened the filter.  The outside weave on the new filter is larger and does not hold together as well.  On the previous model the Protec lining was much tighter/smaller helping to trap more dust and strengthen the integrity of the filter.  I had no issues with moisture flow from the blue lined filters.  None of the tips i.e. flipping when refilling tanks, completely rewetting every few days, etc do anything to prolong the life of the new filters.

I am on my second season.  Last season replaced the blue filters twice.  This season I was barely getting 2 weeks with the all new greatly improved, aka junk, filters.

I emailed numerous online vendors in hopes they had inventory of the blue lined filters.  No dice.  But luckily I found salvation on Ebay.  I have now greedily stockpiled over 10 of the previous blue filters and at a lower cost to new improved filters.  This should last me a few years.  I hope by then the bean counters at Honeywell realize their mistake and revert to the previous model.  One can hope.  Until then avoid the new improved filters.  They are useless.  It's a shame because the humidifier is great.