The site-specific installation consists of a wooden structure measuring 100 x 70 x 260 cm. covered with stainless steel pieces. This frame, which leaves the room space, interacts with the surrounding space, constantly changing its appearance due to optical phenomena that expose the surrounding light, third party movements and colour reflections that appear throughout the day. In this way the work is conceived as a cooperation between several factors, including the spectator as an active agent of participation.