Designing the connections for this stuff to the wall.

The boxes at top and bottom (the orange ones) are attached to the studs in the wall with screws. The box in the middle has 10 TV's and we had them put two steel posts inside the wall. Those posts have little shelves sticking out through the wall that the box sits on.

Oh yeah, we also designed the frame that houses all the TV's. Or maybe we just checked to make sure their design was strong enough; I don't remember.