WaterSentinel WSL-1 Refrigerator Replacement Filter: Fits LT-500P Filters Made from Coconut Shell Carbon Made in US Quick, 1-step installation with the same OEM performances; Manufactured in the U.S.A Get the best crystal clear drinking water; NSF 42 certified to remove chlorine and other contaminants WQA Gold Seal Certified. Filter Fits: LG Filters: LT-500P, 5231JA2002A Guaranteed by WaterSentinel WaterSentinel brand ensures the highest standard of contaminant retention, including filtering out most of chlorine, cysts, rust, corrosion, sediment, and turbidity. 90 Day warranty against manufacturer defects from date of sale with invoice from WaterSentinel. For Customer Service call 866-218-8473