Type B Filter Cartridge
For the 2000, 2500, 3000 and 4000 gal/hr filter pumps - Intex® filter pump models 56631E and 56621E or Krystal Clear™ pump models 51 and 520R. Type B Filter Cartridge also used with Intex Saltwater System Chlorine Generators with filters, models 54611E and 56611E.
