This cartridge is NSF42 certified. The Samsung DA29-00003F 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 or the G variant 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 these two 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 as shown in the image) 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. 

The new cartridge looks slightly different but the top part designed to fit in the receiver is identical, however the cartridge is marginally shorter and has some aesthetic changes to its grips and external moulding. 

In almost all other aspects the 'F' cartridge looks, fits and works in exactly the same way as the previous model(s) and it has the same life-span of 6 months.