Tilt window balance

A home owner from 32060 says:
Could you please tell me The replacement part for this tilt window balance. It's about 20 years old, 29 inches in length, 1/2 in each side, secures with a screw not a hook, has a rectangular piece on the end that is attached to a heavy duty string which inserts into another device. It has the number 27b as well as orbsi. I also need the part that attaches to the bottom of the window. It's 2 1/2 inches long, 1inch between the screw holes, 1 in between the screw hole and the foot, the foot length is 3/8 of an inch. The last piece which the shoe fits into is 2 in. Thank you
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Thumbnail of the uploaded file named 27B
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Emily from SWISCO responded:

Hello there!

It looks like you have the S770-27 with the 27B stamp option. For the pivot bar and pivot shoe, see the 26-454 and 15-129. Carefully review the specifications and see how they compare with your old hardware. 

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
How to remove window pivot shoes
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Anatomy of a tilt window
Anatomy of a tilt window
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How to Replace Damaged Pivot bars
How to Replace Damaged Pivot bars
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Removing Rusted Pivot Bars
Removing Rusted Pivot Bars
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