Product review (5 stars): Great Filter, where's the handle?
Love this filter. If you follow the directions and fully soak/clean it at each fill-up it will work its best. It holds up to a lot of use. I use the protech cartridge in my humidifier. I've had the Honeywell HCM-6012i for over a month now and have a 1400sqft house.  This unit and filter do the trick.  The humidistat is kept at 55% and I refill it once a day.  The filter is still going strong. Just a little bit of the edges coming off, but I do soak it at every fill up.