AQUACREST Replacement F-601R Filter Cartridge, Compatible with Insinkerator F-601R Filter Cartridge for Hot Water Dispenser (Pack of 2) Our high-quality filters offer clean and fresh water to you and your family. Its easy to install requiring no tools. For detailed instruction, please kindly refer to the Instruction Manual in the box. To enjoy fresh water, it's recommended you replace the filter every 6 months or 500 gallons, whichever comes first will vary based on water conditions. Offers reasonable price without compromising quality. Interchangeable with Insinkerator F-601R Filter Cartridge for Hot Water Dispenser. This filter is not sourced by or sponsored by Insinkerator. Advanced material for refreshing water Easy setup wizard Optimum results for up to 500 gallons or 6 months, whichever comes first will vary based on water quality