Can't Identify my Balance Parts

A quick learner says:
March 26, 2019
3 windows are the same balancer types 2 have single spring balancers these windows are approximately 27 1/2 x 33 inches Vinal windows the larger one is approximately 37 x 49 inches also vinyl window this would take 4 bar shoes as in pics. 6 balancers??-2 with double springs and coil inserts and 4 with single spring and coil inserts also 6 shoes sliders. Also have a simington window which I bought parts from you before which were the old style 2 hole bar witch is not made any more. the shoes sent had ridges on them which made them to tight to fit properly
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Paul from SWISCO responded:
March 27, 2019

Many thanks for writing in. The window balance system parts you are showing are for the old Metal Industries windows. The pivot shoe is our 15-180, while the coil springs will be Series 190. There is a spring weight number stamped on the coil springs near the pivot shoe they are attached to. The coil spring balance clip is the 15-181 for two coil springs and 15-186 for single coil springs. The coil spring bushings are 15-182. The pivot bar that people used for this system is 26-226.
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
Pivot Bar, 3-1/16"
Pivot Bar, 3-1/16"
26-226
$2.55
Double Support Detent Clip
Double Support Detent Clip
15-181
$6.17
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