The 4 Pack Fridge Filter includes various compatible models and features a filtration method of Carbon/Charcoal using coconut shell carbon. With a capacity of 200 gallons, this filter is suitable for both commercial and household use. The filter is designed with a capacity of 200 gallons, with a dimension of 2 inches in depth, 7 inches in height, and 2 inches in width. Made by Howsyki, this filter is a convenient and reliable option for maintaining clean and fresh water in your refrigerator.