3405 Balance ID?

Question

I just spoke with someone about new channel balances for our Simonton Windows. Hope these photos are what you need. Metal to metal measurement is 35 inches.

User submitted photos of a window balance.

Tom · Accepted Answer

Thank you for contacting us. I think the best match we will have for this balance is our S380-35, which comes with a 19-005 top and 15-005 bottom. I recommend looking this hardware over to confirm that everything matches.

The stamp is a little weird, though. I'm actually not familiar with this. Can you tell me the exact weight of the sash? That will help us calculate the necessary spring strength.