Aluminum window friction support rods

A quick learner from Alamogordo NM says:
October 17, 2020
Our home is 40 years old and we have aluminum windows with a rolled steel rod on both sides. These rods are thin metal and then have a long spiral coil inside that in some way supports the window in any position.

These rods are now worn and galded so the window move hard and in small jumps.

Looking to replace these support rods. The rods are maybe 3/8" in diameter
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Bob from SWISCO responded:
October 20, 2020

Old aluminum windows with 3/8" diameter rods often can use our Series 400 Spiral Balances as replacements. Let me know if you have further questions, and we'll do our best to help.

24" Series 400 Spiral Balance
24" Series 400 Spiral Balance
S400-24
$10.10
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How to Identify a Replacement Spiral Balance
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