Product review (1 stars): BEWARE
This product is NOT a proper Samsung DA29-00020B replacement cartridge.  It fits in the fridge, but the nozzle opening is completely different.  It leaked within minutes.  If you have a RS263TDWP refrigerator, DO NOT buy this product.  I'm fortunate that I was suspicious and caught the leaking as soon as it started.  This seller should be ashamed.  I have purchased another brand of DA29-00020B and it worked fine.