The Vitaliving for Sub-Zero 4204490 Water Filter and Air Cartridge-7042798 Combo Pack Set is a high-quality water filtration system designed specifically for Sub-Zero refrigerators. Made in the United States, this premium activated carbon block filter effectively removes chlorine taste and odor, ensuring clean and fresh water for your kitchen. The white color and sleek design make it a stylish addition to your kitchen, while the easy-to-install unit provides you with a reliable and efficient water purification solution.