tilt window balance replacement

Question

Metal "tube" 27 inches long
1.1 or 1.2 centimeters wide, I think
Brand, window pro told me, in Silverline.

What part should I purchase, please?

Casey · Accepted Answer

Thanks for posting! That is our tilt window Series 795 Channel Balance. It would be best to remove your sash and weigh it on a scale. From there, you can go to the sash weight chart on the product page to confirm the correct spring option.