Sash Support Coil Balances

A contractor from Glendale, NY says:
I need what is in the attached pictures. The cover says part number 801020 and I included a front and rear picture. I can not find any stampings on the broken coils. The sash is 19 pounds, the coil is 1/2 wide.
Thank you in advance!
Thumbnail of the uploaded file named IMG-5833.jpg
Thumbnail of the uploaded file named IMG-5834.jpg
Thumbnail of the uploaded file named IMG-5835.jpg
Thumbnail of the uploaded file named IMG-5836.jpg
Profile picture of Bob
Bob from SWISCO responded:

This looks like a 15-191 Pivot Shoe, which uses Series 160 1/2" thick Coil Balances. For a sash that weighs 19 lbs, I'd use (2) of the S160-4 4.5 lb springs on both sides of the sash. This equals 9 lbs of support on either side of the sash, for a total of 18 lbs of support overall--so long as the window sash weighs exactly 19 lbs, being within 1 lb should work fine. For new supports, see the 15-150D

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 4-7 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.