The INSINKERATOR F-2000 Under Sink Water Filter Replacement Cartridge is a premium instant hot water dispenser accessory designed for the Insinkerator F-2000 model. This white filter cartridge is specifically designed for easy installation under the sink and provides clean, fresh water for your convenience. With a size of 1 count (pack of 1) and a weight of 1.39 pounds, this cartridge has a shelf life of 1000 days and should be replaced every 6 months to ensure optimal performance. Ideal for maintaining the quality and efficiency of your under sink water filter system.