I don't know if there is a standard height, but if you can figure out were they are measuring from then you could measure the one you have and get close. And the elevation adjustment in the rear sight will compensate for some difference.
1st I would try to straighten the sight you have now. If not remove the bent sight and measure the how high the sight is. They use the measurement from bead on top to the flat bottom. I'm guessing yours at about .375"