Product review (3 stars): This Crucial one doesn't work as well as ...
Honeywell HC-14 is so pricey but works fine. This Crucial one doesn't work as well as Honeywell. Enough full moist air doesn't come out because of the material outside wrapping this thin plastickey filter. My hygrometer won't change much doing this way.

So I took the outside's soft material by cutter knife as I attached a photo. It's a kind of easy job & doing this way, way much moist air coming out.

But still, I feel the Honeywell one works better.