Double glazing units are manufactured from two or more panels of glass held apart by a spacer and bonded with a seal, with trapped dehydrated air between the glass panels. Their primary function is to improve the thermal insulating properties of window glazing, as well as to contribute towards safety and security. They have some excellent sound reduction features too. Double glazing will help you cut costs through significantly lowering energy bills and moreover, owning a product having a great energy efficient design will let you show the community that you are serious about saving energy. Insulated double glazed units are suitable for residential and commercial applications such as compounds, villas, towers and residential buildings.