Series 140-10 Quick Tilt Balance as a replacement?

A quick learner from Thornton, Colorado says:

May 23, 2017

Hi,
I have BF Rich White Vinyl Tilt-In double hung window that use the balance coils shown in the attached pictures. The coil broke. Can you take a look at the pictures and tell me if you believe your Series 140-10 is a good match as a replacement? The measurements look promising. The plastic housing is stamped with a "0" marking; visible if you zoom in. Does that mean 10 pound? If so, it would make sense, given the sash is about 20 pounds. Can you confirm?

Thanks,
Victor

Tom from SWISCO responded:

May 26, 2017

Thanks for posting. This looks like our 15-175 pivot shoe and Series 152 spring. The proper Series 152 option would be determined based on the stamp on your old spring. It should be located near the screw that attaches to the shoe.

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