Custom Balance

Thanks for posting. It appears you have a Series 770 Channel Balance, but with a hook attached at the bottom so it can connect with a 15-208 Pivot Shoe. There is also a rivet at the top so it can connect to the window jamb with an S-Clip like the 19-030. This is not the standard configuration of this balance, but we'd be happy to provide it for you via custom order. I need just a little more information to get this going for you:

• Can you confirm the length of the metal channel?
• Your stamp isn't a type commonly seen with the Series 770. The stamp refers to the weight the balance is calibrated to support. Can you give me the exact weight of the window sash that these balances support? Weighing the sash on a bathroom scale would suffice.
• Can you show me the rivet at the top of the balance that S-Clip attaches to? I need to see if it's in the top or second-to-top hole of the metal channel. 
• Finally, how many balances do you need?

From there I can get this all quoted for you.