THIS IS ULTRAWF!!!!See the model clearly!Don't make the wrong purchase!Purchase error does not accept returns!!!!The Pure Source Ultra ULTRAWF is designed with a carbon-based filter to improve your water by removing the odor and taste of chlorine for smoother drinking, making it easy to keep the whole family hydrated;Certified by NSF Standard 42 to reduce chlorine gas, taste and smell; 53 certified to reduce health-related pollutants such as lead, volatile organic chemicals and asbestos; Certified 401, can reduce the emergence of new chemicals;Replacement fridge filters, Replace water and air filter every 6 months for best results.PureSource ULTRAWF Compatible With the Following Part Numbers:A0094E28261 242017800 PS2364646 242017801 ULTRA-WF46-9999 ULTRAWF 9999Fits the following model numbers:25370313211, 85075-SPG-001, FFHS2611PF, FGHB2844LF, FGHC2342LF, FGHC2331PF, FGHC2331PF0, FGHC2331PFO, FGHB2844LF5, FGHB2866PF, FGHC2342LF3, FGHC2331PF6, FGHS2644KF, FGHS2631PF2, FGHS2355PF, FGHS2631PH, FGHS2655PF, FFHN2740PS0, FPHS2386LF7, FPHB2899LFB, FPUS2686LF0, FPHB2899LF4, 253.7031321, FPHS2687KF0, FGHS2631PH, LGHC2342LFO, LGHB2867PF2, LGHC2342LF3, PN242086201. FPBC2277RF5, FPBG2277RF, FPBG2277RF0, FPBS2777RF, FPBS2777RF0, FPBS2777RF1, FPBS2777RF2, FPBS2777RF3, FPBS2777RF4, FPBS2777RF9, FPSC2277RF0, FPSS2677RF0Installation Instructions:1. Press the push button to open the filter cover2. Pull the old cartridge downward to remove3. With new cartridge in the horizontal position, push the the cartridge into the manifold hold until it stops4. Push it up in firmly until you cannot push up further5. Push the filter cover until it clicks into place6. After replacing flush approx. 3-4 gallons of water through filter be