Need guidance on replacement rollers(2) and track 6ft

Thanks for posting. How does our 81-149 Tandem Roller compare? Measure the dimensions in comparison to the diagram below and let me know what you think. Note that we don't sell that plastic bracket that is atop your old roller; you'll have to reuse your old one if possible.

Alternate image for 81-149

For the track, we carry one kind of sliding glass door track, our 80-106. Review the video below to see if you think you could adapt this to your door.