Replacement channel balance

Question

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.

Tom · Accepted Answer

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.

Comparison of 15-004 and 15-005