Window parts

A quick learner from Infiana says:
August 24, 2022
I belive it is called a nylon window balance. The circled image says 25HD. I believe these are crestline double hung windows from January of 1997.
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Casey from SWISCO responded:
August 25, 2022

Hello,

We'd be happy to help but, unfortunately, we can't make out the necessary details needed to identify a replacement. We would need to see an undamaged version removed from one of your windows with a clear view of any end fittings and the clip at the end of the pulley cord to compare to our inventory. Essentially, we need to confirm how our balance attaches to the window jamb, as well as the sash. Thank you!
A quick learner from Infiana says:
August 26, 2022
Uses single screw to mount to the window jam. Has a metal piece on the end of the nylon line that connects it to the pivot piece
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Casey from SWISCO responded:
August 29, 2022

It looks like your metal channel measures 26" long based on your photo. If so, see the S770-26 and compare the specifications to your assembly. I would also recommend weighing your window sash and following the chart under the balance product description to choose the corresponding strength option for your replacements. Thank you. 
26" Series 770 Balance
26" Series 770 Balance
S770-26
$12.59
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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