window ballast

Home Owner from Fairmont WV

Jun 16, 2025 12:54 pm

THe part number is located on the photo with the white paper under it. You have to blow it up to see it.
I see the stamp Andersen Corp on the bottom right and below it, I see this "C9 6#23 1-85
I need two of these. I may need more. I am assuming they are the same in my other wondow, that is the same size.

5 user uploaded images

4 Replies

Jasmine from SWISCO

Jun 17, 2025 1:20 pm

The replacement balance you'll need is the 24-637 Andersen Sash Balance. This can be used for right and left handed applications.

These are for balances marked with a 623, 627, 631, and 637.

Home Owner from Fairmont WV

Jun 19, 2025 1:51 pm

i need you too look at this window sash balance. It is from a different window, and I need to replace it.
I will include photos It has a number D34 7#27 2-85 on the opposite side is is 600 -17. please let me know if these are the same as the other one, in your previous post. or if I have to get a different balance.

5 user uploaded images

Jasmine from SWISCO

Jun 20, 2025 9:31 am

This balance has a 7#27 in the stamp, so you'll need the 24-737. This Andersen Sash Balance will replace balances marked with a 725, 727, 731, and 737.