Help!

Thanks for posting. Pella Sliding Glass Doors often use the 81-244 or 81-098 (we also carry a generic version of this second one, our 81-249). But there's no way of knowing what you need without removing the old rollers and comparing to these possibilities to see if any of them match what you have. The video below shows how to remove and replace patio door rollers. Let us know what you find.