pella sliding door designer series made 2006

Thanks for writing in. The only way to know for sure what you have is to see an original roller removed from the door. The code you give is often related to the 81-244, but I can't be certain that's what you need without knowing the width and height of the outer housing, as well as the diameter of the wheel. It could also possibly be the 81-098, as you cite, as well as the 81-249. Take a look at these parts, compare the width and height of the housing and the diameter of the wheel to your old roller, and see if you think one of them is what you need.