35 inch tilt window block and tackle sash

A quick learner from Philadelphia PA says:
August 16, 2023
I am trying to locate 2 replacements for my 22 year old windows.
The windows themselves say Thermolite Inc 1GCC CBA02 on them.

Can someone help me locate them please or do you have them ?
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Lauren from SWISCO responded:
August 17, 2023

Hello, thank you for posting,

Your balance resembles the Series 770 that installs using a screw at the top. Please review the overall style to confirm a good fit! You will need to look at the metal channel for a number that will indicate the spring strength stamp option needed to support the window sash.

Let us know if you have any additional questions. 
35" Series 770 Balance
35" Series 770 Balance
S770-35
$13.82
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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