Product review (5 stars): Perfect OEM replacement
Best quality there is - excellent replacement filter. Not much else to say. OK< I have to add 7 more words - so easy to install and I hope they are long lasting.

UPDATE September 2014. The filter lasted the entire 2013-2014 winter season and was used every day, all day long.  In spring 2014 I took the filter out, gave it a quick rinse and noted that it barely had any 'wear' to it and no build up at all.  I will be using the same filter for the upcoming 2014-2015 winter season.

NOTE that I owe the longevity of the filter to two things:  I use ONLY reverse osmosis water in my 9 Gallon Space Saver Style Evaporative Air Whole House Humidifier, and I use the Essick Air Humidifier Bacteria Treatment to keep the water fresh and clean. Becaseu I use RO water, I used only 1/2 the recommended amount of the treatment, with no ill effects. This filter is GOOD TO GO for another season!!!