not the best of pictures but it looks a lot like an airplane window- not a little airplane- like a passenger jet.
It looks as if there are screw holes around the edge about an inch apart. indicative of common aircraft windows.
also it looks like window is kind of thick and heavy- also common ac window
there in many cases will be at least two sets of copper wires leading to little discs imbedded in the glass these are thermocouples


