Product review (5 stars): Perfect Replacement
Just what I was looking for, to replace the aging filter/wicks for my Essick Air D46720 tower humidifier.  These ARE made different than the original 1040's that came with it, but I think they work better because I'm going through a lot more water from the tanks.  These are more of a honeycomb design, rather than the vertical zig-zag paper wick loaded with glue that everyone hates & usually falls apart in the humidifier as you use them.

****UPDATE  Oct. 25, 2015****

Since I live in an area that doesn't have hard water (Eastern seaboard peninsula), I'm able to use the first set of wicks for a second season.  They *are* somewhat discolored, but still usable for a second time.  Just turn them around with the other side facing out.  I'm not being tight with my money, just if something is still perfectly good, why not use it again?