Do I have the Series 377 Channel Balance?

A home owner from Florida says:
See pictures attached. The stamp state g-23-3.

Non tilt. Looks like S377 but not sure.

Thanks. Andrew
Channel Balance
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Tom from SWISCO responded:
I agree, the Series 377 looks close. This comes with the 19-018 top and 15-005 bottom. As long as those match you should be okay. If they differ in any way, though, let me know exactly how.
A quick learner from South Florida says:
Is there any way to tell from the the picture (g-23-3) what stamp option to use? If not, what method should be used to determine stamp option?

Thanks.
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Paul from SWISCO responded:
Yes there is. Your stamping of "23-3" should correspond to our 2330 which holds a sash weight of 15-18 pounds. If you want to be 100% certain that is correct, you can always remove your sash and weigh it on a scale to see what you come up with.
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