Confirmation of the Channel Balance Model Number

A quick learner from 32817 says:
June 1, 2021

Hi,

I believe that I need the 27 inch Series 377 Channel Balance. Please confirm, plus, the marking 23 - 3 W, I do not know it will correspond to which number. Please advise.

I have two windows like this, which means that I will have to get 4 Nos of the Channel Balance with the accessories on both sides?

I plan on replacing the Channel Balance for 12 Windows in the house.

Awaiting your reply.

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Tom from SWISCO responded:
June 7, 2021

I agree that the Series 377 is close, but I cannot confirm. The top fitting could either be that or it could be the 19-041, which has to be custom attached. Your tape measure is unfortunately blocking the part of the top fitting that would allow me to determine for sure which one you have. Would it be possible to see that without the tape measure?
Channel Balance Top, Pan Am
Channel Balance Top, Pan Am
19-018
$0.92
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How to Replace a Channel Balance Attachment
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