Looking for new roller assembly




We may be able to replace this roller, but your photos are only showing us the inside portion of a roller unit. There should be an outer housing, probably still installed in the door. If we can see the whole thing, we should be able to identify a good match.
IN the meantime, you can see our entire selection here.




I can see the outer housing right there in your first photo. I just can't identify it while it's still installed. Are you not able to remove it? Some patio glass doors require you to knock the bottom rail off before you can remove the roller completely.
If that's necessary, you will need to remove the corner screw that holds the frame together on both sides. You might want to lay the door down on a work bench or a good set of saw horses. With the assembly screws removed, take a block of wood and a mallet or soft headed hammer and tap off the bottom rail. It should come off without too much problem. Take care not to damage the glass in the door.