Whirlpool Genuine Parts: This inline water filter provides clean, fresh water to keep your body hydrated. Featuring the 1/4” push-to-connect fitting offers quick installation for the external refrigerator water filter. NSF Tested and Certified: A whole house filter you can trust – certified by the National Sanitation Foundation International against NSF/ANSI Standard 42 for reduction of Chlorine Taste and Odor. Long-Lasting Filter Life: Whirlpool recommends to replace your WHKF-IMTO filters every 6 months in standard water conditions. It is essential to change filters on time for optimal use of your filtration systems. Lower maintenance cost can save you 200-300% less than a refrigerator internal water filter. Multi-Usage Applications: This 1/4 inch pre-filtration inline water filter can be widely used for refrigerators, ice makers, water coolers, coffee makers, sink faucets, drinking water fountains, under sink Reverse Osmosis System, mobile homes, RV, and boats to improve water quality. Compatible with refrigerators without built-in filtration. Whirlpool refrigerator ice water filter provides clean, fresh water to keep your body hydrated. Try Whirlpool’s full line of filtration system products including whole home filter housings, under-sink filters, refrigerator ice maker filters, replacement filters, and more.