Product review (5 stars): These filters will disappoint in initial appearance since they are thinner than originals
These filters will disappoint in initial appearance since they are thinner than originals, but after the initial doubt in them discovered that they actually work better than originals! Found them to wick really well, as they allow better throughput of air, and in that are more efficient in air humidifying action. Also found them to last longer, i.e. are less susceptible to mold.

As with all paper wick filters, make sure you fill the water reservoir just enough for one day's use, so that the humidifier runs your filter dry on a regular basis. And to same end, never switch your humidifier off while the filter is still wet, and let it sit like that - it will grow moldy in days. With regular runs to dry, you can have this filter usable for several months.