Product review (5 stars): Arrived quickly and in perfect condition
Ordered this for my GeneralAire Humidifier on my heating system. The product comes in a sealed plastic pouch, because the wicking material is coated with a compound to help the material hold and distribute water over the surface of the metallic wick.  Open the pouch over a garbage can or your sink, as some of the powdery coating comes loose in shipping, and it is a little messy.  Pre-rinse this item in cool tap water before installation into the humidifier housing.  It will also be important to remove this item at the end of the heating/humidifying season, and clean up the wick tray and surrounding surfaces of the interior of the humidifier housing with a wet sponge.  The coating compound breaks down after the heating season and can end up fouling your return air ducts if you do not remove it promptly. This is a procedure I have developed via trial and error over the last 6 years.