Window balance

Hey Eric. Start by looking at either our S380-34 or S385-34 Channel Balances. The only difference between these two balances is the depth of the bottom nylon shoe, or the measurement from 'heel' to 'toe'. See the illustration below for guidance. Compare both with your old hardware to see what matches best. In either case, for a stamp option choose 3330. Let me know if you have any questions.

Comparison of the S378, S380 and S385 balance shoes.

You're very welcome! Best of luck with the rest of the project, and please don't hesitate to reach out if we can be of any further assistance.