Channel Balance

Hello there. I believe this might be an S378-24, depending on the depth of the bottom nylon shoe. See below. Measure your old shoe depth to see what matches best.

Comparison of the S378, S380 and S385 balance shoes.

You then have to choose a stamp option, which reflects the strength of the balance. Your old balance's stamp of 2306 is from a rating system we don't recognize. To know what to pick, weigh the window sash that these balances support. You can use that weight to choose the right stamp option. Let me know if you have further questions.