Tennsco Executive steel 4 shelf bookcase with glass doors Executive Steel 4 Shelf Bookcase with Glass Doors, 36w x 15d x 52h, Sand Sliding, tempered safety glass doors. Safety lock (key included). Integrated finger pulls. Rounded top edge. Four-shelf unit has three extra deep 13-1/2" adjustable shelves that raise and lower in 2" increments. Overall 36w x 15d x 52h.