Tubular LED luminaire, IP68/IK10, for ceiling surface mounted or suspended, wall mounted and in continuous line application. Made of Ø52mm transparent or opal polycarbonate tube, with inner aluminium profile and injected transparent polycarbonate end caps. Standard version with 4000K LED, RG0 (Risk Group 0 for photobiological safety, according to IEC 62471), CRI>80, MacAdam Step<3 and 80.000h lifetime (@ L90, B10, Ta 25 ºC). Pre-wired with internal through-wiring and plastic cable gland. Optional in 3000K, Tunable White, with dimmable DALI driver and presence sensor. Available as option with suspension S4, stainless steel end caps, five types of fixing clamps (PVC D50, stainless steel D50 clip, stainless steel A1 D50, stainless steel A2 D50 and stainless steel D50 with fast locks) and with two types of cable glands (metal cable gland or breathable metal cable gland). Possible to include recessed T5 D90 or surface mounted T4 D90 round ceiling roses.