Spring/ lock shoe

Question

I am not sure which type of double spring and lock shoe I need to order. Upon review, I see a CL engraved on the top spring and a B engraved on the bottom spring. There is a 0 on one of the plastic covers and a J on the other plastic cover. Can you please tell me what I need to order?

Thank you!

Tom

Bob · Accepted Answer

Hey Tom. This looks like a 15-177 Pivot Shoe, which uses our Series 152 Coil Balances. To know what spring weights to select, give me the exact weight of your window sash and I can work it out for you.