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Bob from SWISCO responded:
February 23, 2022
This looks like the 15-215, which is included in our Series 140 Coil Balance assemblies. If you need to replace the coil springs, look for a stamp that indicates the spring strength. If there is none, weigh your window sash. Give me the exact weight and I can work out the weights you need. |
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Bob from SWISCO responded:
March 1, 2022
Apologies, I somehow missed that stamp in the first photo. Yes, I think that 10 is perfectly reliable to go by. In that case, see our S140-10 10 pound spring assembly. This should work as a replacement. Let me know if you have further questions. |
