26 7 bsi window balance

Hello there. If the metal channel is 27" long, you absolutely want the S795-27. Some older versions of this balance just used a different stamp system. To know what stamp option to select for the replacement balances, it's best to weigh the window sash the balances support to be safe. You can use that exact weight to choose the right stamp option.

See the guide below that goes into further detail as to how to replace these balances.

Guide: Modifying the Series 795 Balance