balance coil and shoe for single hung vinyl window

A quick learner from Raleigh, NC says:
November 11, 2016
As shown in the photograph, the spring coil snapped. The sliding part of the window is double glaze and weigh just a little under 16 pounds. What will be the correct parts for both shoe and coil? Thanks.
coil balance
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Tom from SWISCO responded:
November 14, 2016
Thanks for posting! Based on your picture, we would recommend our Series 190 coil spring. You will need to match the number on your existing spring up to the options available for the Series 190.
A quick learner from Raleigh, NC says:
November 14, 2016
Hello Tom,
Thanks for your information. Regarding the number on the coil, it is not legible at all. As I posted in my original email. the window weigh slightly less than 16 pounds. Does the help?
The number you quoted, Series 190, is that just the coil spring or a coil spring/shoe combination?
Farouk
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Tom from SWISCO responded:
November 15, 2016
Ah, I see. It would depend on how many springs are used on each side. I'm not sure if you use two on each side, or just one. If you just use one on each side, I recommend our S190-840. If you use two, I recommend our S190-440.
A quick learner from Raleigh, NC says:
November 16, 2016
Evening Tom,
Thanks for the info. But before placing an order, I need to replace the "shoe" also. Do you carry them? Do you need information on it? Let me know what type of info you need. Thanks.
Farouk
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Tom from SWISCO responded:
November 17, 2016
Sure, we actually have a list for you on the right side of this page that shows all the related hardware to the Series 190 coil spring.
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Coil Balance Clip
Coil Balance Clip
15-186
$5.05
Balance Bushing
Balance Bushing
15-182
$1.80
840 S190 Coil Balance Spring
840 S190 Coil Balance Spring
S190-840
$11.32
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