Are the 84-002M meant for the top and bottom?
A handy person from Mequon.WI says:
June 19, 2014
Wheel broke off the bottom, and I found an exact replacement on your website (Pt# 84-002M). Are the wheels on the top the same? I'd like to replace all four at the same time.
Paul from SWISCO responded:
June 20, 2014
Yes, the manufacturer uses the 84-002M for both the top and bottom of the door.