Can you help me identify replacement balancing springs for a vertical opening window?
Spring length = 32 inches (from metal edge to metal edge, not counting plastic shoes).
Window size: H=35.5 inches, Width= 33.5 inches.
Window weight= 33.2 pounds
Outside Spring housing width (see pic) =0.656"
Inside Spring housing width (see pic) =0.530"
Markings on spring housing (see pic): 31 5 BO CALDWELL
Window Ballancing Springs
Quick Learner from San Jose
Jul 6, 2018 6:56 pm
4 user uploaded images
2 Replies
Casey from SWISCO
Jul 9, 2018 3:02 pm
I was able to narrow what you have down to two options. Your either have our Series 380 or our Series 385 channel balance. The difference lies in the depth of the shoe. The Series 385 balance has a 15-004 shoe, which is 1-3/32" deep while the Series 380 balance has a 15-005 shoe, which is 1" deep. Please carefully compare all measurements and dimensions to be sure before purchasing.
You will choose the 3150 stamp "option" at checkout which correlates with your 31 5 stamp. If you have any question please don't hesitate to reach out!
Comparison of 15-004 and 15-005
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