... hermetically-sealed air space. The most important function of insulation glass is to reduce thermal losses, which offers many advantages: ... size: 2500*3550mmMinimum dimension: 200*400mmTotal thickness of the empty glass: 10-40mmThickness of alum frame: 6mm, 9mm, 12mm, nonstandardProducts ... building, etc. Waiting room of the airport, rolling stock, freezer where have constant temperature request.