channel balance identification and replacement

A quick learner from USA says:
January 24, 2017
It's one is 27 " and other one is 29 "I think the width is 8 cm. Thank you for your response.
User submitted photos of a window balance.
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
February 1, 2017
Thanks for posting! Please see our Series 770 channel balance, I think this matches your hardware.
27" Series 770 Balance
27" Series 770 Balance
S770-27
$12.70
29" Series 770 Balance
29" Series 770 Balance
S770-29
$12.80
Pivot Shoe, 9/16" Thick
Pivot Shoe, 9/16" Thick
15-129
$2.50
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
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How to remove window pivot shoes
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Anatomy of a tilt window
Anatomy of a tilt window
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