... It is able to contain single glass or double glass, according to customers requirements. The settings ... Sash face width55mm Glazing option6mm single glass, 12mm tempered glass, 6+12Argon+6 double glass, 5+0 ... extreme environment from -30~40°C. Single glazing and double glazing system.It’s able to use single ... glass or double glass in the system, according to ...