Filter is new and sealed. The Sub-Zero 4204490 Water Filter Replacement Cartridge is a discontinued product designed for use with various Sub-Zero refrigerator models. This filter cartridge is specifically designed by the brand Sub-Zero to provide clean and fresh water for drinking. With a focus on water purification, this product helps ensure that the water produced by your refrigerator is of high quality and safe for consumption. Perfect for those looking to update their Sub-Zero refrigerator’s water filter, this replacement cartridge is a reliable and efficient choice for maintaining clean water in your home.