Non tilt balance 28 4 FQ Caldwell

Professional from Pensacola
Jan 2, 2025 12:33 pm
Hello. I am replacing the balances on my window. I am pretty sure it is the s390. Both shoes do not have wings. The bottom shoe depth is 1 3/32 in depth which is really close to the 1 1/8 in on the 390. I believe the difference in depth could be from natural wear from use. The length of the metal is 29 in. The stamp is 28 4. Would I be safe to assume that would translate to 2840?
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4 Replies

Jasmine from SWISCO
Jan 2, 2025 3:22 pm


Thanks for posting! I believe you are correct. The difference you are seeing in the shoe measurement is likely due to it having been worn down. The S390-29 with a 2840 stamp should be the balance you need. You'll want to be sure to double check that your sash weighs between 23 to 28lbs.

Professional from Pensacola
Jan 2, 2025 3:31 pm
Thank you for the info. I thought i was on the right track. I just needed that reassurance.

Jasmine from SWISCO
Jan 2, 2025 4:07 pm


I'm glad I could help! Please don't hesitate to reach out with any other hardware repair questions you might have.
Have a great weekend!
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