Installation Ø173 - Mounting hole dimension: Ø160 mm. Ø220 - Mounting hole dimension: Ø210 mm. Luminaire for recessed ceiling installation, for ceiling thickness 5–50 mm. Stable assembly springs included. For detailed information, see the installation instructions. Connection Ø173 - Terminal block 3x1.5 mm² or 5x1.5 mm² when dimming. Ø220 - Terminal block 3x2.5 mm² or 5x2.5 mm² when dimming. Integrated ballast for flexible installation. Through-wiring possible. CLO - Constant Light Output. Design Ø173 - Front disc in polycarbonate PC with glass coating. Ø220 - Front disc in PMMA. Body and ceiling bracket of cast aluminium, made from 85% post-consumer recycled material. Alu-grey RAL 9006, anthracite grey Gris 900 Sablé, black RAL 9005 or white RAL 9016 structured lacquer. Light distribution Narrow, medium and wide beam or asymmetric.