Product review (4 stars): De-Mystifying Humidifier OEM Filters for Sears/Kenmore, Aircare/Essick, MoistAir and Idyllis Machines
I have a Sears humidifier, model 758.144160.  Over 5+ years, I foolishly believed Sears that Kenmore part 32-14911 was made for my machine even though it was short (8" x 6.25" x 2.375" vs Aircare HDC411's 11" x 6.25" x 2.375").  And I paid $18 if I could find it instead $16 today...what a concept, the right part for less!

During my search today, I found a business, iAllergy.com, whose website was very helpful in identifying the humidifier make/model to OEM filters (in this case, Aircare) for my Sears model humidifier.  Tina at Essick Air (OEM manufacturer, 800 547 3888) also confirmed the fit and utility for me separately.  As good luck would have it, iAllergy.com is located 15 minutes from me and Kevin was very helpful.  I picked it up, tried the filters on my machine...an exact match!!!!  So, look up iAllergy.com or call Tina at Essick for help locating the right humidifier filter for you.

Hope this post helps others in the future!