spiral balance replacement

Question

I have 10 double hung wooden windows with old spiral balances. I would like to replace the balances. I need:
16xQ 35"length 5/8" diameter for 14lb windows
4xQ 35"length 5/8" diameter for 12.3lb windows
16xQ 37"length 5/8" diameter for 14lb windows
4xQ 37"length 5/8" diameter for 13lb windows
The pivot bracket is attached to the underside of the sash on the current style spiral balance. Do you have parts that will work for me?

Casey · Accepted Answer

Hello,

Your old-style balances with the bracket fixed to the spiral are no longer available. With that being said, you can use the S500-35 and S500-37 balances with the 17-012 bracket. Both balance lengths will use red top options based on your sash weights. Thanks for posting!

How to measure the length of the Series 500 spiral balance.

Dimensions for 17-012

Additional dimensions for 17-012