channel balances

A contractor from Palatine IL. 60074 says:
November 28, 2021
I have two sizes of channel balances. One measures 24" and I need 2 of them and the other measures 28" of which I need 6. All measurements where taken as was described in your YouTube video.
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Thumbnail of the uploaded file named 2740
Thumbnail of the uploaded file named 2340
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Emily from SWISCO responded:
December 1, 2021

Hey there!

It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You will also need a 2740 stamp option for this balance.

If you have any questions just let us know!

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
A contractor from Palatine IL. 60074 says:
December 5, 2021
Hi

It appears to be the S390.

What is a stamp option?
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Emily from SWISCO responded:
December 6, 2021

A stamp option refers to the stamp on the metal channel, which indicates the weight range your balance is calibrated to support. In this case, yours reads "2740", meaning that you'll need to select the 2740 option on the S390-28's store page. This option supports a sash weighing 19 to 26 pounds. Let me know if this makes sense!
28" Series 351 Channel Balance
28" Series 351 Channel Balance
S351-28
$10.97
28" Series 390 Channel Balance
28" Series 390 Channel Balance
S390-28
$10.97
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