Left hand window balancer
Hello,
It looks like you have either our S351, with a 15-002 bottom attachment, or S390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need to locate the stamp on your metal channel to choose the corresponding spring strength option for your replacement balances.
Also, we do recommend replacing both balances at once so that there is equal support on both sides of the window to support the sash. Thank you!
I have measured and identified the correct balance I need. It is 1 1/8 inches wide and this corresponds to the S390, with a 15-001 bottom attachment.
The balance measures 23 inches metal end to metal end.
The spring strength markings is: 22 3 KW
I am including a few more photos so we can make sure we are ordering the correct replacement
I will need both left and right balances.
Thank you!
Mark
It sounds like you'll need the S390-23 balance with a 2230 strength option.
