Window opens vertically; up & down

A quick learner from Arizona says:
September 4, 2017
I do not know what kind of double pane window I have.
There are no identifiers on the window.
One of the shoes is broken and the window won't stay open
It is a white vinyl window.
Any help in identifying the type of shoe I need is greatly appreciated.
Thank you. Photos are included.
Coil assembly
Profile picture of Paul
Paul from SWISCO responded:
September 8, 2017
Thanks for posting. The pivot shoe you need is our 15-180. If you need new coil springs, they will be Series 190. When ordering the coil springs, you will need to match the spring weight numbers stamped on your old springs. The other hardware shown in your photo is our 15-186 and 15-182.
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Balance Bushing
Balance Bushing
15-182
$1.80
Coil Balance Clip
Coil Balance Clip
15-186
$5.05
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