Quarter turn, cyst removal. In grill water filter for Whirlpool, Maytag, Amana, Estate, Roper, Kitchen Aid, and Jenn Air model refrigerators. Filters chlorine, rust, lime scale, dirt, and other impurities. Improves the taste of your water and clarity of your ice. Retains beneficial fluoride while still maintaining filtration quality. EOM (Original Equipment Manufacturer) product.