I think its a pivot bar

Hello,

If you could provide the distance between the center of the hole that's used to install your pivot bar to the end of the "T" shaped base, we should have a better idea of which pivot bar you need. Thank you!

Take a look at our 26-360 pivot bar. Look and compare the screw hole placements to what you have now and let us know what you think. The extended horns at the tip aren't necessary in the operation of the window. Hope this helps!