What Channel Balance do I Need?

A quick learner from CA says:

Window Channel I- 28" 2740N?

Hello,

I need to or 4der channel balances for several windows. The string doesn't recoil.

The windows frame has the label: H-LC25-54x90

The existing channel balance is stamped 2740N (I think see image).

Any help would be appreciated.

Thumbnail of the uploaded file named win1.jpg
Thumbnail of the uploaded file named win2.jpg
Thumbnail of the uploaded file named win3.jpg
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Bob from SWISCO responded:

Thanks for writing in. See either our S380-28 or S385-28. The only difference between these two Series is the 'depth' of the bottom nylon shoe. With the Series 380 the depth of this nylon shoe is 1", whereas with the Series 385 it is 1-3/32". Compare with your own and see what is best. You will need a stamp option of 2740.

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