Patio screen door roller.

We have a broken roller on our patio screen door. The door was installed four years ago so it's a fairly new model. I don't know who the door manufacturer is (nothing on door) but they were paired with Jeld-Wen aluminum sliders. I can't find this roller at local hardware stores or online. Would greatly appreciate any help.

Thanks a bunch Tom, that definitely seems to be the one after lining it up with the one I have. Appreciate the quick reply.