Product review (5 stars): he was so congested and the Humidifier helps make him feel better. But we hadn't had to use it in ...
Exactly as expected.  I needed these for the Humidifier in my youngest's room;  he was so congested and the Humidifier helps make him feel better.  But we hadn't had to use it in months and when we looked at the old filter, it was unacceptable.  These were a great price and can't beat the two day prime shipping!