Abstract: The vertical reflective enclosure, containing a double-pane bay window panels, with movable inserts between the panes, which function as shading devices, and a light reflective panels directly extending above the bay window panels at top portion, intended to channel the sunlight and an outside view from the translucent roof membrane to the exterior wall installed transparent mirror window. This enclosure, in the form of a bay shaft configuration adapted for positioning around such window, is attached at the upper end around the translucent roof membrane and at the bottom and terminated below the wall window.