coil balances

Contractor from Jefferson city missouri
Both, the bottom and top Have patent number 5353548 Stamped on them. The coil itself, Has either a nine or six Stamped on it.
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Lauren
Lauren from SWISCO
SWISCO
Expert

Hello, thank you for posting,

Please review the 15-087 coil pivot along with the 15-086 tandem housing. Compare the dimensions to confirm a good fit! These parts are compatible with the Series 180 coils springs. To determine the correct weighted options needed for your window, please provide the weight of the window sash to move forward. The sash will need to be removed and placed on a bathroom scale. Thank you! 

Detail of 15-087
Detail of 15-087

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