Double glazed windows include two parallel panes of glass divided by a spacer bar generating an airtight hole. This gap ranges from 12-16mm and is made up of either dehydrated air or inert gases like argon. Most windows have a Particular lower-E (low emissivity) insulating movie over the glass that https://louisumalw.arwebo.com/57179906/the-greatest-guide-to-double-glazing