Trying to find these

A contractor from Charlotte says:
Windows are missing the balancers, also want shoes pivot arm, and sash levers. Will add more photos
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A contractor from Charlotte says:
It's a double hung window. Can't find any labels to determine the brand or manufacturer. The sashes weigh 14lbs each. Need the balancers and shoes.
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Casey from SWISCO responded:

Hello,

Your balance shoe resembles the 15-087 housing pivot shown below, which would use the S180 coil springs, 15-086 tandem housing, and 16-024 mounting bracket. For a 14-pound sash, you would use one S180-7 coil spring on each side. Take a look and let us know if you need anything else. Thank you!

Detail of 15-087
Detail of 15-087

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