Features: 1) Made by fusing together 2 panes of glass spaced by dry air, argon or other inert gases 2) Excellent efficiency in solar heat insulation, greatly lessens cooling load 3) The dry air inside the enclosure renders the surface free from misting 4) More excellent efficiency will be if filled in argon or other inert gases 5) Applications: architecture, trains, refrigerators 6) Air space: 6mm, 9mm, 12mm 7) Max. size: 98" x 78" (2,500 x 2,000mm)