Yes, I think Samsung has changed the design of the DA29-00003G filter. I have purchased four from two vendors and non work on my 2011 RF266AEBP refrigerator. I contacted Samsung and was told to get Samsung service repair to fix the problem. The repair man thought my filters were fake. Suggested I go to Homedepote and look that theirs. Same as the ones I have at home. Why does Samsung unwilling to tell me they changed the design. I guess I am no longer a Samsung customers.