29-9 LX CMC 11 channel balance

Handy Person from FL
I had one channel balance fail in a window that is ~5-6 years old. It has an inked designator on the spine that reads as follows:
29-9 LX CMC 11

It measures ~1/2" across the spine and is 30" long.

I would like to purchase 2 new channel balances but am confused as to which is the correct replacement.
Can you help?
Gary
User submitted picture of channel balance stamp and attachments.
8 Replies
Paul
Paul from SWISCO
SWISCO
Expert
Thank you for posting. Before I can recommend an applicable replacement balance, can you please tell me the weight of your sash?
Paul
Paul from SWISCO
SWISCO
Expert
To weigh your window sash, remove it from the window and place it on a scale. Any normal bathroom scale would do.
Quick Learner from FL
How would I tell?
Quick Learner from FL
the lower window (sash?) weighs 25#.
Paul
Paul from SWISCO
SWISCO
Expert
Thank you very much. Please take a look at our S385-30 channel balance with a 2940 stamp option. This can support a sash weight range of 23 through 28 lbs.

This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
Quick Learner from FL
Thanks!
Handy Person from FL
Thanks again!
Ordered 2.
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