Window Balance Spring Strength Stamp?

Question

Hi there,
I need to replace a Window Balance and I'm not sure which Stamp Option is correct. The only numbers/letters I can see on my current balance say "27 5 FV CMC 6." The balance measures 28 inches. My best guess based on the photos is that I need a SERIES 795 CHANNEL BALANCE. Can you tell what Stamp Option I need based on this info? Thank you!

Bob · Accepted Answer

I can't be certain what balance you have without seeing it out of the window, with views of the attachments at both ends. However, if you are certain you have a S795-28, then your balance's stamp code is from a different rating system we do not use. In this case you'll need to obtain the exact weight of your window sash. You can then match that exact weight with one of the weight ranges listed alongside each stamp option listed on the S795-28 product page.

To read more about the Series 795 and things to keep in mind when replacing it, see this blog article here.