Compatible with the following models : Compatible For 4204490 4290510 F1000 Refrigerator Water. High-Efficiency Purification - NSF-certified, effectively reducing 99% of chlorine, lead, mercury, and other contaminants, providing clean and safe drinking water and ice-making water. Easy Installation - No tools required, 3-step quick installation (twist-remove-insert), completed in under 30 seconds, even for beginners. Long-Lasting Use - 6-month lifespan (whichever comes first), with a smart timer to remind you when to replace it, saving you time and effort. Made from recyclable, environmentally friendly materials to reduce plastic waste.