The Kosmiki hot water dispenser filter was designed especially to be compatible with the InSinkErator F-1000S water filtration system, to make sure you continue to enjoy high water quality without spending fortunes. Our water filter for sink features high-efficiency filters that capture all the impurities, sediment, dirt, rust and most of chlorine, resulting a cleaner, purified water free of foul odors or unusual tastes.This hot water dispenser replacement filter has a long lifespan of 6 months, which can save you money, time and energy. Also, it is 100% safe to use, non-toxic and ensures optimal pressure without the risk of bursting.The water filter replacement is extremely easy to install and comes with clear instructions for a safe and quick replacement. Make sure you flush 2.25-gallons of water through the filter before use for approx. 3 minutes. OUR REPLACEMENT FILTER CARTRIDGE COMPATIBLE WITH INSINKERATOR F-1000S HAS A TOTAL CAPACITY OF 500 GALLONS, ON A FLOW RATE OF 0.75GPM, AND A PRESSURE OF 30-120PSI. IT OPERATES AT A TEMPERATURE OF 33-100-DEGREE F.