Part 81-243 looks almost identical except it is taller (1 7/16 as opposed to 1/3/16. The space where the roller inserts is 1 3/16 so the taller roller will not fit. Door is about 44 years old.
Casey from SWISCO responded:
July 16, 2018
Hi, thanks for reaching out. Your photos appear to better match our 81-093 or 81-269 rollers. Look over the dimensions and get back to us with what you think!