Product review (1 stars): DO YOURSELF A FAVOR.....
I've used Vornado Humidifier and fought the filter problems for three years. Clean often, use a special cleaner, clean the humidified one a week.etc. Nothing worked.  I don't usually write reviews but I'll make any exception for these filters. The filter price doubled in stores, I still buy from Amazon but filters are the same crap. They shred and begin to fall apart in two to three weeks. They actually pull apart.  DO YOURSELF A FAVOR BUY A COOL MIST HUMIDIFIER. NO FILTERS TO DEAL WITH AND SOME OF THEM SHOW THE ACTUAL MOISTURE THATS IN THE AIR. I'M JUST SORRY IT TOOK ME SO LONG TO CHANGE AND STOP PUTTING MONEY IN VORNADO'S  POCKET FOR A BAD PRODUCT