constant force balancer

Thanks for writing in! Your coil balance assembly looks similar to our Series 140 coil balance assembly. Since yours is stamped with a 9, you'll need the S140-9. These are made for the left and right side of the window, so you'll need to be sure to go back and add the side you need, for the specified quantity, once you've added one of the sides to the cart. Take a look at the dimensions below to confirm that this is the correct replacement.

Alternate image for S140-9