Round recessed trimless downlight (Easy Installation) made of die-cast aluminium with white powder-coated finish (RAL 9016) and white reflector; ON-OFF Driver; System Power 11W; measurement Ø43mm; trimless mounting with a cutout of Ø51mm; luminaire's height is 90mm; ceiling thickness 1-25mm; CCT 3000K with a System Luminous Flux of 850lm; high color rendering at an index of CRI90; after a lifetime of 50000h L80B10 min. 80% of the luminous flux with energy efficient CITIZEN LED Chips; 5 years warranty; lighting perfectly suitable for reading, writing as well as computer and control work with UGR<19; degree of housing protection IP54 on the visible part of the product one installed; light source replaceable by a qualified electrician; driver replaceable by a qualified electrician