... plate,the surface of the panel is phosphorization thence sprayed with plastic,no asy rust,durable long time,reflect curvereflectcover according ... ×28W,4×28W,3×18/20W,4×18/20W,2×40W and so on.3)safe with high effect,easy to install4)competitive ... to making productswith different size according to customer's requirments. T5 4*28W grille lamp(louver fitting,office ceiling lamp)