... 3×14W,4×14W,2×28W,3×28W,4×28W,3×18/20W,4×18/20W,2×40W and so on ... .3)safe with high effect,easy to install4)competitive price ,high quality ,long life and ... buildings,meeting rooms,exhibition halls,classrooms,shops,supermarkets, and so on6)customer can choose the materials to making ... size according to customer's requirments. T5 4*28W grille lamp(louver fitting,office ceiling lamp)