window channel balance

Hello,

We'd be happy to help but we'll need to see the entire balance, including the top nylon attachment that is not visible in your pictures. The stamp 2540 indicates the spring tension needed to keep the window up but, unfortunately, does not tell us the replacement balance that you need. Thank you!

Thanks for the photos. Your balance looks close to both our S380-26 and S385-26. These look exact with the exception of the depth measurement on the bottom balance shoe. The depth of the bottom balance shoe for the Series 380 measures 1" and for the Series 385, it's 1-3/32". You will need to measure the depth of your bottom shoe, like in the diagram below, to determine which balance will work. Whichever one chosen will go with the 2540 option. 

Alternate view of 15-004