CALDWELL window channel balance

Thanks for your photos. Based on what I see here, you have either our S351-29 or S390-29, 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 S351 and S390 balance shoes.

That appears to be the same size and configuration as the balance you showed in your original post. You can follow the same method of identification as previously outlined.