Product review (3 stars): OK but do not last longer than 30 days
Filters do not look like the original and do not have the outer lining.  If you replace the filters exactly as outlined (every one month or sooner) they work OK, but if you leave the filter in for more than a month you will begin to develop mold and build up on the filter.  Just be sure to change at least every 30 days if you use this filter otherwise you will need to clean your humidifier from the buildup.