Product review (4 stars): Replacement Cartridge DC-51 will fit Sunbeam model 702
I have Sunbeam model 702, the nursery humidifier that looks like a fish tank.  This Sunbeam cartridge has been discontinued and I believe it's being substituted with the Kaz DC-51.  A previous reviewer states it does not fit Sunbeam model 701.  I can't speak to that, however it does fit model 702!