Glass panel roller assembly from a Citation Patio Door model 80
A handy person from Pensacola,Fl. says:
February 29, 2016
I would like 4 of these rollers and 2x6ft of replacement track,80-102,thanks,Lloyd.
Paul from SWISCO responded:
March 2, 2016
Please see our 81-112 Peachtree patio door roller. I think this could be what you need.