latches or springs for my attic windows

A quick learner from Pennsylvania says:
Looking to replace latches or springs for my attic windows. I believe the spring is the issue as it seems the tension in the spring is gone therefore not holding the windows locked. Any recommendations appreciated.
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Emily from SWISCO responded:

Hello there!

Thank you for reaching out to us. Our 90-093 latch appears to be similar to what you have here. However, we don't sell a replacement for the keeper so you would have to reuse yours if possible. Look this part over and see what you think. 

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