Hello, my name is Marko and I need assistance in Purchasing the right coil balances. The ones I have, both of the top coils are broken on the side. The stamp on the coil are "D". The window weight is 12 pounds. I have included several pictures. Thank you.
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Bob from SWISCO responded:
August 3, 2021
This looks like a 15-177 Pivot Shoe, which uses Series 152 Coil Balances. A stamp of 'D' might denote a 4 pound S152-4 spring; however, if the window weighs exactly 12 pounds, I would use 2 S152-6 6 pound springs, one on each side of the sash. That would total 12 pounds of support overall. |
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Tom from SWISCO responded:
August 6, 2021
If your sash weight is 12 pounds then you definitely want to follow the instructions Bob gave above. You'll also need an additional cover/cartridge for the springs since it looks like your old setup only had one. So I recommend the 15-143, 15-144, and 15-145. These three pieces all kind of "sandwich" together and snap over the spring, working as a cartridge to hold it in place. As for screw, you want the 33-072. |
