1,aluminum framed with ABS corners 2,1 or 2 pcs tempered glass,sliding door. 3, for office or school used. 1,Aluminium frame, cork surface (or mesh fabric surface)2,1 or 2 pcs tempered glass(or PMMA), sliding door3,The lock in the middle of the board.4,Packing 1pc/ctn.5,Size:915*610,915*1220,1220*9156,Silvery or bronze, two colors to choose. Aluminium frame show window