Need help to order vinyl window parts

A quick learner from USA says:
March 2, 2022
? The width of the plastic cover is 1 1/4"

? The weight of the large sash is 21.0lbs

? The weight of the small sash is 11.8lbs

Thanks so much. Please do let me know what you would recommend.

It was no trouble to remove the old parts, so I feel confident I can make the repair if I can find the right parts.
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Bob from SWISCO responded:
March 3, 2022

Thanks for posting. This looks like a 15-175 Pivot Shoe, which uses Series 152 Coil Balances. For the sash that weighs 11.8 pounds, we recommend using two of the S152-6 6 pound springs, one for each side of the sash. For the 21 pound window, use a pair of S152-6 6 pound springs and a pair of S152-5 pound springs, and use one each for both sides of the sash. If you need new housing components, see our 15-143, 15-144 and 15-145. Let me know if you have any other questions.  
6 lb Series 152 Coil Balance
6 lb Series 152 Coil Balance
S152-6
$4.80
5 lb Series 152 Coil Balance
5 lb Series 152 Coil Balance
S152-5
$4.80
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Support Barrel
Coil Support Barrel
15-145
$0.49
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
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Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
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