Balance replace

Home Owner from 60014
Hi,

I need new balances for Milgard windows. Based on design, I think I need S380 or S385 versions, but they look very similar. Please let me know which one makes more sense based on my photos.
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Emily
Emily from SWISCO
SWISCO
Expert

Hi there!

I agree, with this combination of attachments, you could have either an S380 or S385 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. 

Is there a stamp on your metal channel? If not, you'll need to remove and weigh your sash to choose the appropriate spring strength option. There's a chart on the S380 and S385's product page that shows you which option you'll need based on the weight of your sash.

If you have any further questions just let us know.

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.
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