window balance part weight spec (color)

Quick Learner from USA
This pic is for window balance parts in my window. I bought a house and the window has no markings or labels, so I can't tell u what the mfr is. Is a double-hung sash window and the sashs won't stay open. The balances are broken and I want to replace them myself. One set is approx 24inch long and the other set is 27inch long. I have read ur website and can't id the parts for weight (color).
I need weight spec. for parts. As u can see from pic, mine is 'yellow'.
 
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2 Replies
Jasmine
Jasmine from SWISCO
SWISCO
Expert

Thanks for reaching out to us! Your spiral balances appear to have 3/8" diameters. If so, you'll need the S900-24 and S900-27.  You'll need to measure them to confirm that this is correct, please let me know if the measurement differs.

Both are available in a yellow tip option on the website. There is a chart below the product description of each balance that shows the weight range the color option will support.

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