Identify the Channel Balance for 29 4 FV CMC 7

Home Owner from 98052
Hi Team,

I am looking for a replacement part for the attached channel Balance.

It is for Single Hung Window. The marking says "29 4 FV CMC 7"

Regards
Samir
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Home Owner from 98052
The Length of the Windows Channel is 30 Inches.
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Emily
Emily from SWISCO
SWISCO
Expert

Hey, Samir. 

With this combination of attachments, you could have either an S380-30 or S385-30 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 spring strength option of 2940.

If you have any further questions just let us know! 

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.
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