The in-line filters utilize coconut shell GAC and are designed to remove unpleasant tastes and odours as well as sediment to produce cleaner, clearer, better tasting water. Low pressure drop, high dirt holding capacity, durable physical strength, and steady flow achieve reliable performance and long life usage. By packing the carbon the concerns of shifting carbon inside the filter are removed. Cartridges are manufactured in compliance with NSF and FDA requirement in material, media and processing. These Granular Activated Carbon filters are easily installed on the water line to an automatic icemaker, Reverse Osmosis System or water dispensing system.Product Specifications:Clean washed coconut shell Granular Activated Carbon mediaMax Temperature Rating: 110°F (43°C)Max Pressure Rating: 125 PSIFilter media: Coconut Shell Activated CarbonNSF/ANSI Standard 42 Certified