spiral balance replacement question

A home owner from MA says:
June 28, 2017
Hello,

Trying to replace the spiral balance in 2 of my dining room windows. We have the metal one with orange tip, diameter more like 1/2" (closer to 4/8 than either 3/8 or 5/8), and measures just under 21". I'm having a tough time finding the right item that would suffice.

Please help :)

Thank you
Nicole
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Tom from SWISCO responded:
June 30, 2017
I would double check the diameter of the balance. It should be either 3/8" of 5/8" (sometimes 9/16"). No company ever made a balance in this style with a 1/2" diameter. There is a special kind of heavy duty balance with a 1/2" diameter, but it is relatively uncommon. If you are positive it's 1/2", we'd like to see a picture of yours in order to find a good match.
21" Series 900 Spiral Balance
21" Series 900 Spiral Balance
S900-21
$8.35
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