Searching for B91 balancer for window sack 33x36

A quick learner says:
April 17, 2018

Hello my name is Fernando ,and I am looking for a balancer for two windows ,the two first pictures are one of the windows and the others are a diferent home but same type of window, is no more info I can supply, as far as I know, the construction company name was pulte,and both houses was build in 2004 I wonder if you guys can send me a price for balancer for this windows, the balancers in both windows are a metal coil inside and have a string and the sach size for both is 33x36 .

I'll appreciate your help, thanks

Fernando 

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Tom from SWISCO responded:
April 20, 2018

We should be able to help, but I'm afraid I cannot identify your balance from these photos. If possible, please remove the sash from the frame and show me a picture of the shoe or clip at the end of the balance cord. Thank you!
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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