Need balance

Home Owner from Tampa, FL
Need a replacement for Lawson SH-7600 window. The balance has a 3040 on it. The aluminum measures 9/16" in width and 31" in length. What is the replacement part # please?
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Bob
Bob from SWISCO
SWISCO
Expert

Hello there. See our S380-31 or S385-31. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Compare both with your old hardware to see what matches best. For a new stamp option, choose 3040.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

Home Owner from Tampa, FL

Appreciate the reply. They are out of the 3040. Would a 3030

Or 3050 work? Please advise.

Bob
Bob from SWISCO
SWISCO
Expert

I'm afraid not. These are very precise systems, and using the wrong strength option will lead to your window not operating properly. If the spring is too weak, the window won't stay open. If it's too strong then you'll have the opposite effect: it will be very difficult to close and could even drift open on its own.

I am sorry for the inconvenience. I promise that we're trying to get that option back on the shelf ASAP.

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