Non-Tilt Channel Balance replacement

Hi there Roger.

Thank you for reaching out to us. Since the fittings are non-winged and the shoe is 1" deep, I recommend the S351-26. However, your old stamp is from an outdated rating system that we don't use. You would have to weigh the window sash to determine the proper stamp option. There's a weight chart under the product description on the S351-26 store page that you can use as a reference.

Let us know if you have any questions!

Comparison of the S351 and S390 balance shoes.

I'm thrilled we could be of help! You know where to find us if you need anything else!