Winged Window Balance

Home Owner from Colorado
1/2" channel, 30" long. 1-1/8" deep lower piece.
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Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting. Are you measuring the length of just the metal channel, and not including the nylon attachments at both ends? If so, and if the shoe depth matches what is shown below, then this looks like an S385-30 Channel Balance. You also have to choose a stamp option, which denotes the balance's strength. Look for a stamp on the old balance that designates this. If there is no stamp or you're uncertain, just weigh the window sash the balances support. You can use that exact weight to choose the correct stamp option. Let me know if you have questions.

Close up view of the S385 balance shoe.
Close up view of the S385 balance shoe.

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