Window Ballast

Purchasing Agent from New York City, NY
Please help me to identify BSI 1/2" Non-Tilt Channel Balances.
I need to order 6 of them.
Thank you.
Yan.
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2 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

It looks like you have either our S351-35, with a 15-002 bottom attachment, or S390-35, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 3420 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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