It's a 70 and there are the 4 holes that hold the crank on but there is also a rectangle hole that is more to the bottom center and has 4 threaded hole around it and about 6x10 inches. What kind of plate cover? I was wondering if it might be something more than a window access?
yeah, there is supposed to be a plate there. I just got new doors, and I am going to turn my old doors into half doors. Since it wont have a window assembly anyways you can have my old plates if you want them.