LED downlight A luminaire of this type, the so-called Downlight, is designed for installation in suspended ceilings or directly on the ceiling. When installed in isolated rooms, the luminaire's heatsink must be at least 5cm away from the insulation. Downlight is most often used to illuminate conference or office spaces. However, their installation is also suitable in corridors or entrance halls. In our range, Downlight is included in three size variants.