Product review (1 stars): Terrible odor
I ordered this at the end of last winter, but didn't use it until this fall.  It was stored in a clean, dry area, in the original packaging.  When used in the humidifier, it made the entire house smell like dead fish.  This is clearly an off brand, not an actual Sunbeam filter.  I quickly replaced it with the actual Sunbeam filter and had no odor problems.  Don't waste your money.