Which coil balancer?

A quick learner from East Norriton, PA says:
April 6, 2016
Both balancers broke and are 1/2 inch wide. There are no labels on the coil and the window weighs 11 lbs. What coil do you think I need?
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
April 8, 2016
I would go with our S152-6 coil spring. This looks to be a good match. These are 1/2" wide and having one on each side can carry the weight of your sash no problem.
6 lb Series 152 Coil Balance
6 lb Series 152 Coil Balance
S152-6
$4.80
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