What coil balance is for which window sash weight?

A quick learner says:

May 24, 2009

How do you know which balance is for which window weight?

Donna from SWISCO responded:

May 26, 2009

For the Series 190 coils they are stamped with the number needed. If you do not have any numbers lightly stamped on your existing coil you may need the Series 152. Here is a guide on how to select the proper weight coil for the Series 152:

Guide: How to choose the appropriate coil balance strength

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S190-440
Price: $9.89
440 S190 Coil Balance Spring

Guide
How to choose the appropriate coil balan...