Secure room means there's no way for anyone (big or small) to sneak into the room undetected. Hence, having false ceiling/floor and ducts need to be secured - u

Secure room means there's no way for anyone (big or small) to sneak into the room undetected. Hence, having false ceiling/floor and ducts need to be secured - usually the fire/aircon zones are also separated and isolated. I have seen colo providers do this when they are hosting banks/financial institutions.