Refrigerator, Icemaker, and Coffee machine 2" x 10" inline GAC (granular activated carbon) filter that comes in the fitting size 1/4" and 3/8". Choose what style above of connector. Very simple installation. Removes smells, tastes, and chlorine from your water. Designed to produce cleaner, clearer, better tasting water. Should be replaced every six months to one year depending on the quality of your water. NSF certification. If you need another size, feel free to check our store.