Windows and other glass products, including doors with glass panels in them, need the right type of glass in order to last for a long time and to look good. Most companies that provide glass products offer double glazing for all of their items, both because of its strength and durability and because of its flexibility when etching designs onto it. Double glazing can be used in a variety of products, and there are numerous advantages to using it. There are also many companies that produce a variety of products using double glazing, so the products are easy to find if this is what you are in the market for.