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These suffixes are internal codes and don't indicate any difference in terms of design or compatibility. Both are compatible with the same refrigerator models. - Ms. Samsung
Sorry, there was a problem. Please try again later.I'm not really sure what it stands for it may just be part of the model number or a part number. You need to know the model number of your refrigerator which you should be able to find inside of it on one of the side panels. The filters list which refrigerator model numbers that they will work with. The off brands will not work with my fridge even though it listed it as being compatible so I went with the samsung brand. Hope this helps.
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