In an open work environment, people need to retreat for concentrated individual work, to make telephone calls, take part in video conferences or for confidential discussions and meetings. Room-in-room systems are suitable for this: From telephone booths to meeting rooms, these rooms can be installed flexibly and without any construction work. They create an acoustically shielded working environment where phone calls or other forms of communication can take place undisturbed. The equipment options range from standards such as ventilation, lighting systems and electrification to screens and lounge or meeting furnishings. Thus booths create pleasant relaxation areas in the office landscape.