No identifying marks

A contractor from Charleston, SC says:
May 5, 2016
Please help identify sash coil spring and bottom attachment for builder grade windows with NO identifying marks. Windows are Vinyl, single hung, home was built around 2000. Thank you for your assistance.
User submitted photos of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
May 5, 2016
Please see our 15-180 pivot shoe. This may be a good match for you. If you also need the springs, see our Series 190 coil balance.
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)