Product review (4 stars): Pleased to find a filter that fits.
PROS:
These filters are difficult to find so was delighted when I found them on Amazon and at a good price.  They fit well without any alterations. They arrived as scheduled and in good condition.
CONS:  I have only used the filter a few weeks.  When I removed it to rinse, clean and dry it, I could not remove a slight dark coloration which concerns me. This is the only reason I did not rate it a five. However, I now use the humidifier everyday so this may not be a valid issue.

Overall, I am happy with the purchase andI plan to order them again in the future.