I appreciate it so much.

Question

There's a number 15 on the spring casing, but I'm not sure which spring to buy I think it might be Series 152 stainless steel spring. I would really appreciate some help with this thank you so much in advance

Emily · Accepted Answer

Hi there!

Thank you for reaching out to us. It looks like you have our 15-177 pivot shoe which is compatible with the Series 152 coil springs that you mentioned. To determine the appropriate spring weight, you would need to divide the sash weight by the total number of springs in the window.