Channel blance replacement

A quick learner from Simpsonville, SC says:

Good morning.

I need 2 of the pictured channel balances to replace in an existing window.

Do you have this item available and if so what is the part number?

Thank you,

Daniel 

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Casey from SWISCO responded:

It actually looks like you have a coil spring system here. The pivot shoe is our 15-180 . This can be used with the Series 190 coil spring. As for your clip, see our 15-186 and 15-182 bushing. I didn't see any stamping or marking on your coil spring. If there is anything on there, please let us know. If not, we will need the exact weight of your sash. Thank you.

A quick learner from Simpsonville, SC says:

There is a stamp on the coil '8'.

I can't fond the coil searching for series 190.

Suggestions?

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Casey from SWISCO responded:

With your coil spring stamped "8", see our S190-840 coil spring. This holds a sash weight of 8 pounds. Look it over and see what you think. 

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