Window balance

Question

I need to replace a 27" window balance.  The marking on the parts are 2690 B.S.I nk 30.  I also have attached several pictures of the part.  Please review and recommend the part to order.  Thanks.

Tom · Accepted Answer

It appears you have a series 350 channel balance, however your stamp number is from an old rating system that we do not use.

In order to correctly identify the correct stamp number that you need, we will need you to weigh the bottom sash of the window. Once that is done, you will be able to match the weight to the correct weight range alongside each stamp option found on the product page.