Window balances 2710
Hi,
Thanks for writing in. It looks like you have either our series 351 or series 390. The difference between the two lies in the shoe. The series 351 channel balance has a shoe that measures 1" from heel to toe. Whereas the series 390 has a shoe that measures 1 1/8" from heel to toe. You will have to measure your bottom shoe where the hook is from heel to toe. The measurement that you get will indicate which series balance it is that you have from us.
Your stamp on your balance indicates that you might have a 28" channel balance from metal to metal. Measures to confirm. If so, then you will either have our S390-28 or S351-28.