window balance

I'm not sure what you have, unfortunately. We have dozens of different balances with that stamp. It's not a product code or anything, it just indicates the strength of the spring.

In order to figure out what Series this is, I need you to remove an undamaged version of this balance from the window and show me clear pictures of the top and bottom nylon fittings. I will also need to know the dimensions of these fittings.

Perfect, thank you! These pictures are exactly what we needed.

Based on what I see here, you have either our S380-17 or S385-17, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S380 and S385 balance shoes.

The stamp options indicate the calibration of the spring; in other words, they determine what kind of load your balances can support. It's a very important detail.

Thankfully, in 99% of cases you can just use your old stamp to determine what you need. As your original stamp is 16-2, then you can use our 1620. Two balances with this stamp can carry 8 through 12 pounds.

Awesome, I'm glad to hear it! Thank you for the update and please let me know if we can be of any help in the future.