I am not sure of what part to order, I do have the coil and the shoe but the marking is not matching with what you guys have available. I can also send pictures if needed no problem. I am attaching a picture with measurements. The only marking I see is on the housing and it says 13 maybe?? It is hard to tell by looking at it as you can see. Let me know what you think. It's 1/2" thick. Name: Eric
Coil Balance Series: S190
Sash Weight: 19lbs
Coil Stamp: 3
Quantity: 2Thanks.