SWISCO - The Replacement Hardware Authority

Replacement channel balance

A home owner from Glendale, CA says:
Hi. I need to buy 2 balancers for my Milgard single hung windows. The length of the the channel is 30 1/16", not including the plastic attachments. The shoes is about 1 1/16". The stamp on the balancers is 29 9 IU CMC 7
Thank you
User submitted photos of a window balance.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Hey, thanks for posting. I've narrowed this down to two possible channel balance Series: either our Series 380 or our Series 385 balances.

Now, as you can see, there is only one difference between these two Series, and that is their bottom shoe. The Series 380 uses the 15-005 while the Series 385 uses the 15-004. I can't quite tell what you have based on your pictures, though. Please carefully compare their dimensions to your own hardware and see which is a better match.
15-004 and 15-005
A quick learner from Glendale says:
Thank you. Also, based on the stamp, which option will I pick for the weight of the sash? Or do I actually weigh the sash on a scale? Thanks again!
Profile picture of Tom
Tom from SWISCO responded:
I'm afraid I can't cross-reference your stamp to any of our options. I recommend that you weigh your sash and see what it matches up to the best.
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