20 4 channel balance

Quick Learner from Salem, OR
Looking to replace channel balances in several of my windows. Stamp is 20 4 CL Caldwell. Metal measures 21 inches. Plastic ends both have wings. Channel depth is 5/8' and width is 1/2". I believe I know what I need (21" Series 380 Channel Balance, S380-21) but would like to be sure before ordering 8 or more of these. Please advise. Thank you!

Kevin
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Casey
Casey from SWISCO
SWISCO
Expert

Hello,

With this combination of attachments, you could have either the S380-21 or S385-21 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 2040 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

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


Quick Learner from Salem, OR
Thanks Casey, that's exactly the info I needed. Mine are 1 3/32 so I ordered a dozen to replace all in my home. Thanks again!
Casey
Casey from SWISCO
SWISCO
Expert

Great! We'll be here if you need anything else. 

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