Replacement Filter Cartridge Fits the Intex Model 520/530 and 51/52 filter pumps
Also fits older models.
Cartridge is approx 10 inches high by 5.5 inches diameter
Suitable for 18ft and 24ft Easy Set and Frame pools.
Intex Model Number 59905. Type B.
For 12ft and 15ft pool you need the Standard Intex Filter Cartridge.