LouverShade external rack arm systems can be used for vertical or horizontal applications. These systems are always motorized and controlled by either manual wall mounted switches or as combined with various building automation schemas. They are ideal for skylight applications such as the photo seen here.
Rack Arm Systems use fixed support arms which hold aluminium interlocking or overlapping slats which tilt from 0° to 90° by way of manual, motorised or automation control. The tilting slats provide the optimal amount of daylight, minimising the need for artificial lighting and air-conditioner usage by maintaining effective airflow and reducing overall solar heat gain.