I have 6 double hung Peachtree windows with lower sash G1790 and upper sash G1590, both Type AE. These units were bought in 1990. The Balance assemblies for both top and bottom are 32 3/16" long. Both the lower and upper sashes weigh approximately 19 pounds each.
There are no numbers of any kind on the balance assemblies. These are not fold out sashes. Can you help me with this. I'll be glad to take any other pictures you need.