Good evening! Can you help me identify this part number? It is the channel balance for a vertical (non-tilt) window. My windows weigh 29 pounds. The balance measures 28" long and .5" wide. I am not sure what style the end attachments are. Markings are "27 9 JW CMC 11". If a more durable version exists that will fit my windows, I would like to purchase that.
Thank you for your help!
-Greg
Help Identifying Part

Quick Learner from 93626
May 29, 2024 11:57 pm
5 user uploaded images
4 Replies

Jasmine from SWISCO
May 30, 2024 11:26 am


Hi Greg,
Thanks for writing in! Your channel balances appear to be the Series 350 Channel Balance assembled with a wingless top guide and a winged bottom shoe. Since yours is 28" long, you'll need the S350-28.
You'll need to select the 2750 stamp option, which can support a sash weighing 26 to 30lbs.
I'm sorry to say that there isn't really a more durable replacement option we would be able to offer, however, this should work for your repairs.

Quick Learner from 93626
May 30, 2024 11:44 am
Outstanding, thank you for the quick and helpful response Jasmine!

Jasmine from SWISCO
May 30, 2024 12:05 pm


I'm happy to help! Please don't hesitate to reach out with any other hardware repair projects you might have.
Have a great weekend!
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