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Tom from SWISCO responded:
June 26, 2019
Identifying coil springs can be tricky, since so many of them look almost identical. The best way to do it is to identify the pivot shoe first. That acts as a sort of "key" and allows you to pick out everything else you need. For example, your pivot shoe is almost definitely a match for our 15-087. If you look at our photos and dimensions, I'm sure you'll agree. Knowing that, we can also see that the 15-087 pivot shoe was designed to work with the Series 180 coil spring. That's pretty much all there is to it. Let me know what you think! |
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Tom from SWISCO responded:
October 3, 2019
If your sash is 9.5 pounds, one 5 pound spring on each side will be sufficient. I don't think a half pound difference will be the end of the world. As for the mounting brackets and screws, you could probably reuse what you have now. In my experience, these don't break as often as the springs or shoes themselves. If you do need new ones, see our 16-024 bracket and 33-072 screw. |
