Which balance springs to buy?

Question

Hello,
I need to replace my balance springs on my Keller Kelpane M windows.

Thanks,
Monika

Tom · Accepted Answer

Hi, Monika. You're showing the inside portion of a spiral balance here.

You can use our spiral balance guide to figure out what type of balance you need. Then, remove the balance from the window, measure the balance tube (not the metal spiral) to get the length of the balance, and weigh the window sash (then compare to the chart on the webpage for the balance you end up choosing) to determine what color tip you need to order.