Balances

Thanks for reaching out to us. This looks like our Series 380 or Series 385 channel balance, depending on the depth of the bottom fitting. You'll have to measure as shown below to determine the best match.

Your metal channel length is a bit weird. Can you confirm the exact length? It's tough to make out accurate measurements from photos of a tape measure. 

Since your balance lacks a stamp, you will have to weigh the window sash on a scale. Let us know the precise weight and we can go from there.

Comparison of the S380 and S385 balance shoes.

Thank you! If the sash weighs 12.6 pounds, you can use the 2920 stamp option for your replacements. A pair of balances with this stamp will support a sash weighing 12 to 16 pounds.