Where is the dark zone breakout D projection room?

There are three key rooms in Building D: D202, D208 and the projection room. After walking down the connecting stairs between the third floor of Building C and the second floor of Building D, you can see Room 208, which contains a safe, a computer and two computer cases, and you can find many electronic products. After getting out of 208, continue along the corridor and you will see Room 202. There are two large weapon boxes and two Grenade boxes, and it is possible to refresh helmets and bulletproof vests. After coming out of Room 202, you will come to a cinema-style hall. The projection room behind the cinema is the last locked room in Building D, where you can find a safe and two computer cases.