Product review (1 stars): Horrible Product, look for a different item!
I received the filter on 1/31/2014. Today is Feb 20th. I am about to order an new filter. I will not reorder this same item. Last winter I used two filters for the whole season. This filter has the plastic mesh surrounding the absorbent material. It started coming  apart at the seem after only one week. After about 10 days, the water was no longer wicking to to the top half of the filter. I clean my humidifier every weekend. I empty the dirty water out and soak the filter. When the filter is working well, I have to refill the two water containers at least once a day. After my weekend cleaning, it works great for about a day and a half. Then I can go two days or more without refilling. I've taken to turning the filter over twice a day, this helps but only for a short time. It should not take this much work to run a humidifier. If this is the best filter available, then it is time to get a different humidifier.