Window coil balance

A quick learner from Pontiac, il says:
The markings say 409 j
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Bob from SWISCO responded:

I suspect this might be a S170-409 9 pound Coil Balance. The Series 170 Coil Balance interfaces with a 15-192 Pivot Shoe. See the video below for details.

SWISCO S170 and S171 Coil Balance Assembly
SWISCO S170 and S171 Coil Balance Assembly
VIDEO
WATCH >
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How to Replace a Triple Coil Balance System
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How to remove window pivot shoes
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