Need to replace the side load balance on several windows. All appear to be the same Jeld Wen aluminum double pane single hung windows.
Part Information stamped #2030D
Length of metal component minus ends is 21".
Side Load Balance

Quick Learner from California
May 17, 2021 3:33 pm
5 user uploaded images
4 Replies

Emily from SWISCO
May 19, 2021 3:31 pm


Hi there!
It looks like you have either our S351-21, with a 15-002 bottom attachment, or S390-21, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a spring strength option of 2030.
If you have any further questions please let us know!

Comparison of the S351 and S390 balance shoes.

Emily from SWISCO
May 21, 2021 8:38 am


Yes, the S390's metal channel's width is 9/16", but is considered 1/2" in the trade.
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