Non tilt balance 28 4 FQ Caldwell

Professional from Pensacola
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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Jasmine
Jasmine from SWISCO
SWISCO
Expert

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
Thank you for the info. I thought i was on the right track. I just needed that reassurance. 
Jasmine
Jasmine from SWISCO
SWISCO
Expert

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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