replacement balance springs aluminum windows

Tom
Tom from SWISCO
SWISCO
Expert
Good afternoon, and thanks for posting! It sounds like you have our Series 900 spiral balance. Please see our S900-29. I recommend the red tip option, which can support a window sash weight range of 10 through, and including, 22 pounds.

Please keep in mind that the weight range information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
2 Replies
Handy Person from Houston, TX
I need 12 balance springs for:
Tilting aluminum windows
29" balance spring length
3/8" balance spring diameter
18 lb window sash weight

What spring do you recommend?
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