Product review (3 stars): Acceptable replacements, but disappointing quality.
The filters provided are the appropriate size to fit the Idylis 4-wick dual-fan console humidifier. However, unlike the originals they seem to use less adhesive to hold the pleats together, and the overall dimensions can be a little variable. For an original manufacturer's replacement product, I expect a consistent product. These came out of the box with pleats detaching from the ends. It also helps to pre-moisten them before installing, as well.

I'd understand the glue problem if these were 3rd-party discount knock-offs, but that kind of quality control is just a big negative in an OEM replacement.