Atrium Single Hung Window 28"x72"

Thanks for reaching out! To determine the type of balance as well as the correct size for your window, I'll need to see a photo of your balance removed from the window.

From what I can see in the photos, it is likely you have the Series 795 channel balances, however, I'll need to see a clear photo of the balance as as well as the attachments to confirm with certainty. I'll also need to know the stamp/marking from the metal channel.

If I am correct in my assumption, this will need to be a custom order balance, so I'll also need to know the exact number of balances you are looking to replace.