Don't spend money and time on another pool cartridge. Instead, get the Bestway Flowclear 2000-Gallon Sand Filter Pump. When you get this pump, you'll also receive pool valve adaptors with a 1.25-inch diameter, greater efficiency, and peace-of-mind. This 2,000-gallon sand pump is compatible with Fast Set and Steel Frame pools measuring 18-feet or more. This pool filter part saves money, time, and resources because the silica sand's density provides an excellent way to trap dirt particles. Aside from being cost-effective, this swimming pool pump part only requires a replacement once every few years, unlike its traditional cartridge counterpart. Save yourself time, water, and sanity. Get clear on what you want: clear and clean water from the Bestway FlowClear Pump.