Coil Balance Spring
A quick learner from New Jersey says:
April 27, 2014
my window is 24 X 29 inches double glass can you please tell me which size coil do I need, every time I buy this product it breaks after 1 year
Paul from SWISCO responded:
April 28, 2014
Our S190-832 may be a good match for your window. What numbers are printed on your current coil springs, though? That might be a better way to determine a replacement.