trying to find replacement balanceres for single hung tilt window

A contractor from CA says:
trying to find replacement balanceres for single hung tilt window code on part is 29 7 1180 cmc
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Tom from SWISCO responded:

Thanks for contacting us. I think our S770-30 channel balance can work for you, however it might have to be specially made because of your stamp. Can you just confirm the exact weight of the sash? Can you also confirm the length of the metal channel? Finally, how many did you need?

Concerning that pivot shoe, can you show me an undamaged version of it? Can you also tell me its width and thickness?

A contractor from CA says:
I will have to go back and weigh the sash and get photo of pivot shoe.
A contractor from CA says:
Photos of pivot shoe attached. Sash weighs 27 lbs.
balance tube is 30 " inches long . we will need (4) and we will also need (4) of the tilt wash assist mechanism's in the attached photo.
code on tube is 29 7 I 1 8 0

Thanks for your help!
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Tom from SWISCO responded:

Oh, great. This won't have to be specially made, then. I recommend our S770-30 channel balance with a 30D stamp option. This should be perfect for your sash weight.

As for the pivot shoe, it looks like our 15-210. Let me know what you think.

A contractor from CA says:
Thanks for your help Tom!
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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