Coil spring balance

Hello,

Your coil balance resembles our Series 140. Since yours is stamped with a 9, you'll need the S140-9. There are also options to choose balances for the left or right side of the window. Take a look at the dimensions below to confirm that this is the correct replacement. If you need new pivot bars as well, we would need to see yours removed from the sash to compare to our inventory. Thank you. 

Alternate image for S140-9