coil spring balance for a Pella 150 window

A quick learner from says:
December 26, 2023
Hi I am looking for a price on a left and right coil spring balance 9 lb for a Pella 150 series window. I will also need the mounting tabs to attach the coil spring to the frame. Do you have this part and when would you be able to ship it?

I will need 2 sets ( enough to repair 2 windows)

Thank you
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Bob from SWISCO responded:
December 26, 2023

Thanks for posting. It appears you have the 15-251 Inverted Single Support. This system uses Series 160 Coil Balances sold separately. For a 9 pound system, you'd want the S160-9 9 pound spring. Also see the 16-032 Mounting Clips. Let me know if you have any further questions. 
Inverted Universal Single Support
Inverted Universal Single Support
15-251
$3.97
Mounting Clip
Mounting Clip
16-032
$0.90
9 lbs Series 160 Coil Balance
9 lbs Series 160 Coil Balance
S160-09
$5.48
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