Mastic Window Balances

A contractor from Connecticut says:
September 16, 2019
Good Afternoon. I am looking for replace window balances for Mastic double hung windows. The overall length is 31". Please let me know if you need additional information.

David
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Tom from SWISCO responded:
September 23, 2019

Hey, David. This looks like a channel balance for a tilt window, but that's about all I can say from these photos. When it comes to tilt window channel balances, one of the key details is how the balance attaches to the pivot shoe. There should be a clip or hook, or even the shoe itself, located at the bottom of the balance. Sometimes it's at the end of the cord (assuming it extends from the bottom) but sometimes it's installed in the metal channel itself. Before we can recommend a match, we'll need to see that piece.
A contractor from Connecticut says:
November 1, 2019
Hi Tom

Here is the additional information on the balance pivot shoe/clip. I hope this helps identify what balances we need.

David
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Tom from SWISCO responded:
November 6, 2019

This is perfect, actually, thank you so much! That terminal clip is identical to the one on our Series 770 channel balance. Based on your stamp, I'd specifically recommend the S770-31. Look it over and let me know if you agree.
31" Series 770 Balance
31" Series 770 Balance
S770-31
$13.12
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
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