36C balance and pivot shoe

I'm not sure what you have, unfortunately. We have dozens of different balances with that stamp. It's not a product code or anything, it just indicates the strength of the spring.

In order to figure out what Series this is, I need you to remove an undamaged version of this balance from the window and show me clear pictures of the top and bottom nylon fittings. I will also need to know the dimensions of these fittings. 

You also mentioned a pivot shoe. We will also require photos of this part removed from the window. We will additionally need its width and thickness.

Thanks! This assembly appears to match our Series 795 tilt window channel balance. I am confident that this is what you want, but note that our balance installs at the top of the window using a screw, not a hook. If yours uses a hook, I recommend watching our other video below for guidance on what you can do.

The Series 795 comes with a pivot shoe already pre-attached, which is our 15-195. This is 1-1/4" wide. The other options are sold separately in those cases where customers have something different.

If you have any doubts that your shoe is 1-1/4" wide then you need to measure the original to verify what its actual size is. That will require removing it.