broken part inside window sash

Thanks for writing in. This old rod balance isn't made anymore, but this particular type can be replaced with our Series 770 Channel Balance. Measure the length of the rod to determine the correct length to select. You will need to weigh your window sash to obtain the correct stamp option. Let me know if you have any other questions.

Stamp options indicate the calibration of the spring; in other words, they're an indicator of how much weight two balances can support when working together. Your old balance doesn't have a stamp option so you'll have to do some homework to figure out the calibration of these new springs.

To do this, you will need to remove the sash from the window and place it on a scale to get the weight. You Any common bathroom scale will do. You'll then refer to the chart we show on the S770-27 store page to determine the proper option.