question is in title...If possible I would like the entire (I believe there are 8 of them) set but if not justr this 1 broken on will be fine...picture attached
Door make would be your best bet. Look on the vertical track near the top of the door, on the edge of the section or on the hinge or lock. Some brands really label their stuff. Google overhead door brands, not local dealers then the Williamsburg insert. Might get lucky.
