The Innova system is an inward-opening doorset, when you face the flush side, the door opens away from you. This is specifically designed for situations such as corridors and hallways where you might require the door to open into the rooms.
Historically, to achieving a 'hidden' or frameless doorset involved combining a medley of timber, plasterboard and plaster beads to attempt to mimic the concealed door look. Unfortunately this type of invisible door construction was prone to failing because of its fundamental lack of strength.
The Selo concealed frame doorsets, Arriva & Innova, use Ezyjamb door jamb systems, and high performance folded steel frames with an integral perforated plasterbead to allow the plaster or tape and jointing compound to be applied right up to the edge, concealing the door frame and all fixings. This advanced design has made concealed doors in walls possible in a wide range of building types.