help identify missing part

It's very difficult to identify a balance without knowing exactly what was installed before. These are delicate systems, so precision is important. That said, Western Products has used our Series 350 before for their aluminum windows. To determine the length of the balance and stamp option, I will need to know the weight of the sash and the height and width of the visible glass, respectively. You may also need our 16-002 take out clip and 18-008 top sash guide.

Once we have all that information, I still cannot guarantee it will work. You may want to look around your house and see if you have an identical window that uses the same hardware.