LED ceiling mount indoor luminaire, comprising: Extruded aluminium profile housing, die-cast aluminium end caps, painted. Opal PMMA diffuser for optimal light diffusion and a high light uniformity. Streamlined, simple design with flush end caps. High-quality workmanship of profile connections for a perfect look. High economic efficiency thanks to luminaire efficiencies of up to 159 lm/W. UGR <19 for all luminosities. Through-wiring possible. Simple and convenient lighting installation. Interchangeable lighting inserts. Direct light distribution. Colour rendering index Ra > 80. Colour tolerance according to MacAdam ≤ 3 SDCM. Includes recessed mounting kit. Many other luminaire designs and strip light configurations are available at www.light-performer.com.