Bob from SWISCO responded:
August 19, 2019
Thanks for writing in. This looks a 15-181 Support Clip. This is used with our Series 190 Coil Springs. Look for a stamp number on the coil spring that indicates what spring weight you need. If there is no stamp number, or you are uncertain, weigh your window sash. Give us that exact weight, and we'll work out what you need. Many thanks. |
Bob from SWISCO responded:
August 20, 2019
Yes. I believe in this case , it would be best to weigh your sash and get back to us with that weight number. |
Bob from SWISCO responded:
August 21, 2019
Thank you for your reply. You should be able to use one S190-640 coil spring on each side. Take a look and let us know your thoughts. |