Oslo Spektrum Arena AS, popularly known as Oslo's Storstue, is an indoor multi-purpose arena centrally located in the center of Oslo. With a combination of standing and seating, Oslo Spektrum is filled with concerts and shows when Norwegian and international artists visit Oslo. In addition, the arena hosts sports competitions, fairs, events and conferences. Today, concerts and shows make up the majority of Oslo Spektrum's offer to the public. The maximum capacity of concerts with a combination of seating and standing is approx. 11,500 spectators. For smaller concerts, an extensive carpet system can divide the hall and adapt it to the size of the event. The arena's floor area of around 5000 square meters can easily be adapted to various events, ranging from standing concerts, fairs, events, conferences and congresses. The arena opened in December 1990 and is today owned by Nova Spektrum. Jezet installed 3 retractable seating systems with 1906 seats and equipped with double stacking system and partial use to adapt the seating configuration to the need of the event. Also we provided 814 fixed seats for the balcony.