Paul from SWISCO responded:
September 27, 2016
Hello! I think we should definitely be able to help. Your pivot shoe closely resembles our 15-180, which in turn works with the Series 190 coil spring. You will need to reference the number stamped on your existing spring to determine the correct Series 190 option.
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Paul from SWISCO responded:
September 29, 2016
Hmm... we do not carry any springs that can hold 9 pounds. Could it be a 6 instead? To be 100% sure what option you need, you can weigh your sash on a scale and tell me what you get.
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Paul from SWISCO responded:
October 18, 2016
Yes, I think that may be a 6. You can confirm by weighing your sash.
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