Insulated glass,also named insulated double glazing,double glazed panels,or double glazed units,it's a hermetically sealed multi-glass combination consisting two or more panes separated by a spacer filled with high efficient desiccant .To ensure the sealing effect,first sealing finished by polysulfide seal and second by structural sealant.The most important function of insulated glass is reducing thermal loss,achieve lower energy consumption and good transparency.