Approximately 20 yr old Sliding door rollers

Thanks for posting! We do not have an exact match for the roller you have but our 81-056 appears to be the closest replacement and is worth considering as a replacement. Take a look over the dimensions and compare them to your roller to determine if this might work for you. Be sure to confirm the diameter of your wheels, there is an option for a 1" wheel and a 1-1/4" wheel.