the 84-064 seems to have all the correct dimentions however I have metal wheels and the 84-083 does not have the correct space between holes on centewr on top. which one should I order.
Mike from SWISCO responded:
September 20, 2011
I took a look at both the 84-064 and 84-083 Columbia Door Rollers, and I did notice the 84-083 hole center to hole center is about 1/16" greater. However, I spoke to our door expert and he believes the difference is so small that there shouldn't be a reason why these parts are not interchangeable.