Looking for correct coil spring

A handy person from Bayonne NJ says:
March 25, 2023
Hi I am looking to buy coil springs for my window. I attached the windows information if it could be of some use. It is a 33x40 vinyl window and looks like it uses your Double Support Detent Clip Product Code: 15-181 and Coil Balance Shoe Product Code: 15-180. Would you happen to know what spring and weight I would need? If not do I just weigh the sash and divide by 2 (one for each side)? Thank you
Profile picture of Lauren
Lauren from SWISCO responded:
March 27, 2023

Hello, thank you for posting,

The 15-180 pivot shoe is compatible with the Series 190 coil springs. The coils should have a number stamped into the metal to determine the weight options. If not, you will need to obtain the weight of the window sash and divide by the amount of coils in the window. 

If you would like further confirmation, please provide the weight of the sash and I can help determine the correct weighted coils needed. Thank you! 
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Double Support Detent Clip
Double Support Detent Clip
15-181
$6.17
How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.