What's the length of the S190-840 Coil Spring

A quick learner from Fredericksburg, VA says:
September 4, 2019
How long are these springs? I got a replacement, but the spring is too short for the window, and I do not find the length spec anywhere. I needs to be at least 36" long for my windows.
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Tom from SWISCO responded:
September 11, 2019

The S190-840 has an extension of 40", which is standard in the industry these days. Hopefully that helps.
840 S190 Coil Balance Spring
840 S190 Coil Balance Spring
S190-840
$11.32
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