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Paul from SWISCO responded:
June 18, 2015
Hello, Martin. Check out our Series 190 coil spring and 15-180 pivot shoe and see if these could be what you need. I don't see the shoe in your picture so you will need to confirm. It also looks like you need new pivot bars, so see our 26-040 for a possible replacement. Use plenty of WD-40 when trying to remove the old one.
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Paul from SWISCO responded:
June 19, 2015
You may be able to use our Series 140, but you will have to first make sure that it will fit in your jamb track. You also need to choose the correct strength version by weighing your sash and then dividing that in two; unlike other balance systems, coil balance strength is split between the two balances on each side, so if your window weighs 10 pounds you would want two 5 pound balances.
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