Designed with LOW UGR optical accessories especially for office lighting, Totally 4 different optical parts for option, ①.Lens+reflector ②.Microcrystal PS cover ③.Linear lens ④. Frost PC cover, 7 types of beam angle: ①.100°with frost pc cover ②~③. 50° / 35*70° with reflector; ④~⑦.60° / 90° / Asymmetric / Double-asymmetric with optic lens . Also 2 types of light distribution, direct or indirect/direct for option. Consisting of individual luminaries or arranged as continuous rows, can be easily and precisely aligned.