Paul from SWISCO responded:
December 7, 2016
The pivot shoe looks a lot like our 15-177, which is made to use our Series 152 coil balance. The nylon spring housings look fine, so you can likely reuse it.
Now, if your sash is 16 pounds, and you currently use two springs on each side, I would recommend our S152-4. Each of these springs can carry 4 pounds each. |