Installation Luminaire for mounted in ventilated or unventilated suspended ceilings. Installed in suspended ceilings with visible T-bars, VTB (25 or 15 mm) or one-piece suspended ceilings. Accessories available for installation in a concealed T-bar structure (HB) with symmetrically positioned panels. Connection Connection by means of a connection box on top of the luminaire. Wieland Chassis connector 3-way (GST 18i3), with dimming 5-way (GST 18i5). In a continuous installation the luminaire row should always start with a start luminaire. With continuous installation the luminaire units are interconnected with a connection cable in the connection box. Design Luminaire body in natural anodised, extruded aluminium or white enamelled (RAL 9016). With continuous installation an unbroken line of light is achieved, even via a L-coupling. Louvre Opal – plate in frosted acrylic (PMMA). The louvre hangs down 10 mm from the ceiling and provides ambient luminance to ceiling and wall. Miscellaneous Accessories and cables, see Accessories. Enclosure class IP 40 under suspended ceilings and IP 20 above suspended ceilings. NOTE! Do not mix Low Lumens (LL)- and High Lumen (HL)-luminaires in continuous installations.