Built-in versions are also available, offering a significant gain in space and easy maintenance. Characteristics Sheet steel metallic white box frame. Special white optical paint Straight fluorescent tubes "daylight type" light source, colour temperature > 5500° Kelvin. 1700 cd/m² minimum Electrical controls on front Switched on with on/off switch with built-in indicator light or dimmer depending on model Horizontal models with 1 to 4 areas (extended and separated areas) and vertical 43 x 120 and 72 x 120 cm models