Peachtree Balance Help

A handy person says:

I need new balances for my Peachtree windows. Attached are two photos.
The lengths and model number stamped on the back of the old balances are clearly visible.

In case you cant read photos, the # on back of the 20-1/4" balance is 3648
and the # on back of the 26-1/4" balance is 3060D.

The 26-1/4" balances came from a sash measuring appox. 29-1/4"h x 28"w.
The 20-1/4" balance came from a sash measuring appox. 23-1/4"h x 34"w.

I do not have the weights of either sash.
Can you please tell me the complete exact balance models numbers I need to order?

I will have many windows to address and will order in pairs when I do.

Thank you,
Michael
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Michael, thanks for contacting us. Is there a little clip at the end of the pulley string? If there is, can we see a few pictures of it? That would help us determine what you have.
A handy person from Downingtown PA says:
As you requested, here are 2 photos of the clips on my existing balances.
They look the same as the clips on the replacement balances you offer.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Ah, excellent. Just what we needed to see. I think you should definitely consider our Series 745 Peachtree Channel balances, specifically our S745-20 and S745-26. Without the sash weights, though, I can't really say what options you need for either. You will have to weigh your sashes by placing them on a scale and seeing which option weight range they fit under.
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