Product review (4 stars): Much better than I expected. Good value.
I bought these after looking all over replacement filters for my humidifier. I wanted the name brand, original equipment, not some cheap knockoff.  These looked cheap when they arrived, did not look like the original filters, were not I boxes, and did not have the Microban treatment - just plain, beige filters in plastic. I wasn't expecting much. - I figured they either would not wick the water efficiently, or they would need replacing fairly often.

After using the first filter three weeks now, I'm happy to report I was wrong. The filters work fine, and are lighter and easier to handle than the old ones. They are a good value and I would buy them again.

A couple of things I would suggest to get the best use:
- Use a humidifier bacteriostat treatment to keep the water and filter from getting dirty, moldy or smelly. You can get a 32-ounce bottle pretty cheap and it's worth it.
- Flip the filter over when you refill the tank; helps the filter wear more evenly and keeps it from drying out so fast.
- Clean and sanitize the humidifier base monthly, more if it needs it. The Bacteriostat keeps our pretty clean, but it's good to sanitize it regularly to make sure you aren't polluting your own air.