Balance Shoes

Thanks for reaching out to us. We unfortunately don't sell this exact shoe. The only thing we can offer that may work is our complete Series 140 coil balance assembly.

I'm recommending this because it's a fairly versatile assembly and its size seems to be the same as your original. The design may be a little different but as long as it fits in your track you should be okay. 

The only thing you may be wary about is whether the pivot bar will be functional with the new style. I think it will, but in a worst case scenario you could always use either our 26-398 or 26-405 as a substitute. These are the two pivot bars specifically made to go with the Series 140. You would just need to pick whichever option best matches your existing hole spacing.

Would it be possible to get the exact weight of the sash, down to the ounce? That's the only way to properly calibrate what spring strength you need for the job at hand.

Yes, that's correct! According to its specifications, two S140-19 balances can support a sash weighing 37 through 38.99 pounds. That would be one balance assembly per side. As long as your sash is 38 pounds then this will be the proper calibration.