sliding glass door rollers

Looking for replacement rollers for sliding glass door. Do not have photo of them installed. They have the #138 on them. The house was built in '81 I imagine they are that old. We had to take the bottom metal off the glass and slide them out the side to remove them after removing 2 screws on each side of the door if that helps. The bottom metal is open with 2 strips of spline (?)running the length of the bottom of the door.
The photos show the measurements.
Thank you. If this doesn't work I will mail in the part.
Gayle W

Thanks Tom...that sure seems to be right. I re-measured against the illustration & all matches. I will be ordering 2 rollers.
But maybe you can help me with the worn out weather striping along the bottom also before I order the rollers. Please see the photos I am sending.
This is in 2 parts...one piece (it's harder than the rubber/vinyl strip) slipped out of a track on the door and it holds the 1/2 rubber strip. This piece does not need replacing if they come separate. It seems to press into a recess on the part that slips out of the track on the bottom side of the sliding door. It doesn't have any pile on it's just rubber that has cracked & warped.
I hope the photos will explain better.
Thank you - Gayle