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Tom from SWISCO responded:
November 4, 2020
That's a tricky question. You first have to consider if your windows are hard to open because the coils are the wrong calibration, or if they're just old and locking up. You don't want to get a stronger balance only to find out it's too strong. Then your window will be harder to close, which is no good. If you want to know for sure, you should weigh your sash on a scale. That will tell you beyond any shadow of a doubt which spring to get. |
