... -29/m2 3.used for window, door, wall 4.can be colorful 5.high transparant Double Glazing Glass is a ... better than Chinese National Standard of -40 degrees celsius for IGU dew point. 5> Sealing: Aluminum frame is ... time, but sealant & structural sealant or polysulfide sealant double sealing ensures a good sealing of IGU.Product features: ... , Ford blue, Euro gray, black and etc double glaze glass for sale