Extended-Travel Channel Balance Quote

Question

Length is 34 inches; Stamp 3330 BS1 NN (see photo); Unknown manufacturer, installed around 2001; Two balances are needed

Jasmine · Accepted Answer

Thanks for reaching out! This window balance does not appear to be an Extended-Travel assembly. This balance is a closer match for the S350-34. It has a wingless top guide and winged bottom shoe.

Our 3330 stamp will support a sash weighing 18 to 23lbs.