Block and tackle window balances

Handy Person from New Jersey
The above pictures are of a good balance installed in window. The rod in the middle of the spring is 27 1/4". The sash height is 28 3/4". The lock mechanisms are fine. The block and tackle need to be replaced along with spring and rod.

Thank you for your help. Scott
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Emily
Emily from SWISCO
SWISCO
Expert

Hi there, Scott.

This old rod balance isn't made anymore but we, fortunately, have a replacement which would be the Series 770. You'll just need to measure an undamaged balance and weigh your sash on a scale to determine the proper length and strength option. Take a look and let us know if you have any questions. 

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