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
