Bob from SWISCO responded:
January 21, 2021
The shoe was our 15-192, which uses Series 170 and Series 171 Coil Balances. This system is modular, meaning individual parts must be replaced and it does not come as a whole set. If you're uncertain what spring weights to choose, give me the exact weight of your window sash and I can work it out for you. See the video below. |