Velios Linear was designed for ceilings with visible T-rails. Profiled contrast-reduction panels and high-performance central optics give uniformly diffuse lighting. Energy efficiency of up to 130 lm/W. Exceptional glare control gives high degree of visual comfort. Light distribution Direct Light technic LED 34W 4000K Ra>80 SDCM 3 L90/B10 >50,000 hrs Control/Dimming DALI Protection Class I IP20 Materials and finish Housing: Sheet steel Colour: White smooth (Ral 9016 gloss 30) Optics: PMMA (Acrylate) Mounting/Connection Recessed, Indoor 300x1200 Exposed T-carrier 15/24mm 5 pol Winsta / Terminal block Max. luminaires per circuit breaker: B10: 13, B16: 24, C10: 21, C16: 38