I'm trying to locate 2 of these sash balances. I've included a photo of what the entire item looks like and the code printed on the side.
Paul from SWISCO responded:
December 2, 2016
Please see our S385-12 to start out. This comes with the 19-005 top and 15-004 bottom, so as long as those match up to what you have now you should be fine.