Channel Balance ID

A quick learner from FL says:
April 19, 2020

Duraseal L5 111605 0231 window ballast

I need 4 replacement ballasts for subject windows. Thank you.

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Bob from SWISCO responded:
April 21, 2020

I am pretty confident we can replace these balances for you, but we need more information to help. These pictures are a bit hard to make out. Can you show me a good picture of the clip that comes out of the bottom of the balance and connects to the pivot shoe? Can you also show me a picture of any stamp code on the metal channel? Confirming the length of the metal channel would also be useful. From there, we'll do our best to narrow down what you need. Thanks.
A quick learner from FL says:
April 21, 2020
I've attached 2 more photos. The metal channel is stamped with 35D and measures 34 inches long. The clip is visible laying next to it attached to the string. The metal springs are 18 inches long.
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Bob from SWISCO responded:
April 22, 2020

Thanks for that. See our S770-35. Look it over just to confirm this matches what you need. You'd need a stamp option of 35D. 
35" Series 770 Balance
35" Series 770 Balance
S770-35
$13.82
How to replace a tilt-window channel balance.
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