Series 190 Coil Balance

Question

I have a series 190 coil balance, the only stamp I see says 64C or 640. Can you cross reference this number with one of your coil balance numbers?

Casey · Accepted Answer

Hello,

Thank you for contacting us! If you have the S190 with a 640 stamp, you'll need our S190-640. The stamp on your balance indicates the amount of tension you need to support your sash based on the weight. The 640 stamp supports 6 pounds, which you can view under the product description.