Are you measuring the metal channel? If your metal channel is 31-1/2" long, you may need a custom balance. I would also need to know the weight of your window sash, as our 3230 option may not be appropriate.
When you measure the metal channel, make sure to not include the plastic attachments.
Iam measuring from metal to metal. The weight is 9oz.
Thanks,
Charles
Thanks, Charles. 9 oz. sounds like the weight of the balance. I'm afraid that I need the weight of the window sash itself. It sounds like your balance was cut down from its original length, so I'll need to know what kind of weight it will be supporting. Thanks!