Replacement of this Window Balance

A quick learner says:
August 15, 2023
Marking in grave is: B.S.I 1410

15 inches long metal channel.

The Width of the metal channel is half is 5/8 .

The bottom part is 1 1/8 .
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Casey from SWISCO responded:
August 16, 2023

Hello,

It looks like you have the S390-15 channel balance, which uses the 1-1/8" deep 15-001 bottom attachment shown below. Please note that this balance has a 1/2" wide metal channel. 5/8" is not a size that we generally come across for this type of balance. You'll also need a 1410 spring strength option for your replacement balances. Thank you!

Close up view of the S390 balance top.
Close up view of the S390 balance top.

Close up view of the S390 balance shoe.
Close up view of the S390 balance shoe.
15" Series 390 Channel Balance
15" Series 390 Channel Balance
S390-15
$9.34
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