Color of Spiral Balance Tip

A home owner from Austin, TX says:
I want to order some Series 306 spiral tube balances (a 29" length and a 3/8" diameter tube) for non-tilt windows. I removed old spiral balances from a window, but I don't see any tip with color. It seems my window sash can't be removed from window to measure the weight. The sash is about 30inX34in, I feel the sash is about 10-15 lb in the window without spiral balances. So the actual sash weight could be slightly more. I have another slightly bigger window with a sash about 30in X 39in. I will appreciate it if you can tell me which tip colors I need for these two types of windows.

Also, I want to know if it is possible to order Series 306 spiral tube balances attached with 15-073 Sash Carrier Bracket.

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Paul from SWISCO responded:
For the 30" x 34" sash, I think you may be better off with our red tip. It will hold a sash weight of 10 through 22 pounds. For the larger 30" x 39" sash, I recommend our green tip instead. It will hold 14 through 26 pounds. Keep in mind you could try placing a scale on the sill and gently lowering the sash onto it. It may not give the most accurate reading, but it's better than nothing.
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