Identify Parts

A quick learner from Florence SC says:
I need all these parts. One coil is marked 5.5 lbs. The other is for a small window and has no markings. I assume the lightest. Please send me a list of the parts so I can order them. These are out of Simonton windows.
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Tom from SWISCO responded:

Thanks for posting! I made a list of possible replacement parts for you on this page. I think you'll find that everything matches up. You may ultimately want to weigh the light sash just to be 100% sure you get the right spring strength. When you weigh it, divide it by how many springs are used to support it. That will let you know exactly what spring will work best.

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