Inline post carbon filter Additional Details ------------------------------ Bullet point: Advanced Filtration: Experience fresher, cleaner water with the TST Water (IN1013) Inline GAC Post Filter and Phosphate Filter. Designed specifically for reverse osmosis water filter systems, this powerful inline water filter with granular activated carbon effectively reduces impurities and unpleasant odors. Ideal for use with refrigerators, ice makers, washing machines, and more, this filter connects easily with a 1/4" NPT fitting, ensuring clean, purified water for your entire home.