Help with correct replacement for 26 4 Caldwell DM (27")

Question

Hi,

Hoping you can help me identify the correct part number for a replacement window channel balance spring - marking on the existing hardware is 26 4 Caldwell DM and the length of the metal channel is 27", end to end, not including the top or bottom caps.

Thank you!

Casey · Accepted Answer

Hello,

With this combination of attachments, you could have either an S380-27 or S385-27 channel balance. You need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2640 spring strength options for your balances based on your stamp number.

Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.