1.batten fit for 60cm,90cm,120cm,150cm 2.batten fit for T5 in T8 tube in tube energy saving light. 3.grid celing light fitting lighting fixture(120cm) win-R3-120 Dimensions(L*W*H) 1190*598*85MMPACKING:1250*620*190MMapplication:Offices, schools, hospitals, exhibition halls, factories, airports, supermarkets, hotels, car parks, warehouses, restaurantsAny question please contact vivi,thaks