Photos for channel balance
Because of size requirements, this is all I'll send with this email. I'll follow
Thanks for reaching out! Your top sash guide looks like it could be the 18-159P, which is sold in a pair. To confirm that this is the correct replacement carefully compare the dimensions below.
Your channel balances is either the S351-33 with a 1" shoe or the S390-3 with a 1-1/8" shoe. The length of the metal channel for this balance is 33" so you'll want to double check the length. If it is truly 32-1/2, this balance will not work as replacement for your window.
To determine which series is needed for your window, look over the dimensions from the diagram below to confirm the depth of your bottom shoe.
You'll need to select the 32400 stamp.