Kab Seating Executive control room / office chair for M-XXXL size users for demanding 24 hour use. Kab Seating Executive E1Ci is a soft and comfortable control room chair. This very robust, steel-framed chair is an excellent choice for control rooms or other active working environments. The Executive is also suitable for the sturdier-built managers and supervisors. The robust robot-welded steel frame provides a durable platform for this comfortable office chair. The chairs come with a new mechanism, which makes it suitable for 50 – 200 kg users.