deep 5/8, width 9/16 or vise versa, I am not sure how to name them.
It has in it: 1710E B.S.I.
I was searching and i think it is this one from your website, but I am not sure:
"The series 380 sash support system features a channel balance also known as a block and tackle balance for a non-tilt window. The channel's width measures 9/16" but is considered 1/2" in the trade. This balance comes fully assembled with a 15-005 shoe and a 19-005 top attached."
