3/8" Spiral Balance

A home owner from Parker, CO says:
Hi - I need to replace the spiral balances with what I believe are 32" Series 400. The current balances do not have a colored tip. Is there a way to calculate the color needed when the window is not removable to weigh? The windows are 30 3/4" x 32 double pane aluminum GA windows. Thanks!
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Looking at your picture, I would recommend our S400-32 spiral balance. However, just remeasure your tube just to be sure this is correct.
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