Window Channel Balance ID

A home owner from San Marcos, CA says:

I need to know which part to order to replace the one in the pictures. The metal part is 27" long and 9/16th" wide. It has the following stamped on it: 26 4 FX CMC.

Thank you!
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Emily from SWISCO responded:

Hey there!

With this combination of attachments, you could have either an S380-27 or S385-27 channel balance. You’ll 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 a 2640 spring strength option.

If you have any further questions just let us know! 

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