This is a new version of the DA29-00003A/B fridge filter cartridge - The current model is the DA29-00003G from August 2009.

The Samsung DA29-00003G - Samsung part number DA61-00159G - is the new replacement cartridge for all Samsung refrigerators that have internally fitting cartridges (i.e. that fit within the refrigerator compartment itself).  If your fridge was purchased after August 2009 the chances are it will probably be fitted with this cartridge as standard.  However, older fridges with the DA29-00003A and the DA29-00003B cartridges can still use this model and indeed will have to use it since previous models have now been made obsolete.   Regardless of your Samsung fridge, if it uses a bayonet style cartridge (i.e. one which you push up and twist like a light bulb) which fits -inside- the fridge, then this is the correct cartridge for you.

Previously, most Samsung owners with these cartridges would have used the version ending with an 'A or B' suffix, however, as part of their continuing development, Samsung have increased the specification to remove additional contaminents such as pesticides, which the previous version was incapable of handling.   The new cartridge looks slightly different - Obviously the top part designed to fit in the receiver is identical, but the cartridge is marginally shorter and has some aesthetic changes to it's grips and external moulding.

In almost all other aspects the 'G' cartridge looks, fits and works in exactly the same way as the older model(s) and it has the same life-span of six months.