Intex B00LCIR3VS Pool Easy Set Type B Replacement Filter Pump Cartridge (3 Pack), 1, White Package includes 3 filters. 10" tall x 5. 75" diameter size. Lasts up to 2 weeks with normal use. Fits intex filter and pump unit models 633, 56611, 56621, 56631, & 58621. Fits krystal klear pump models 51, 51r, 520 and 520r.