Patio doors wheels

Thanks for posting! Your patio door roller appears very similar in style to the 81-258S Ador Hi-Lite Series 1200 Patio Door Roller. Although, yours appears to be missing the outer housing, which is likely still installed in the door.

To confirm that this will be a fit for your door, carefully look over the dimensions below. Compare them to your existing roller, as best as you can.

Dimensions for 81-258S

Alternate view of 81-258S