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 Spiral vs constant force balance

Author: Sharil (---.direcpc.com)
Date:   

I found info on a window called "Ultimate 2000" - not sure who manufactures it - that states it uses a spiral mechanism. On another website for the same brand, all other info about the product was exactly the same except instead of spiral it stated "constant force balance system" which I noticed other brands utilize. Due to info I've read here, I'm leary of brands that use the spiral system. How could I be sure that if a brand states "constant force" it is not the spiral type since the information on this particular window claims both?
Thanks for any insight...



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 Spiral vs constant force balance  new
Sharil  
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mjsremodel  
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Window4U (IL)  
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Sharil  
 Re: Spiral vs constant force balance  new
Window4U (IL)  
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Sharil  
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SUPERSONIC  
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Guy  
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Clark  
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Window4U (IL)  
 Re: Spiral vs constant force balance  new
Window4U (IL)  
 Re: Spiral vs constant force balance  new
mss  


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