That is located between

It should be known that new technologies made it possible to produce selective glass, which in turn can reduce a small amount of thermal radiation, directly falling into the intermediate space of the window. For example, the glass that is located between the inner and outer layer can be replaced by a film on which a selective coating is applied. Until this moment, thermal insulating properties could only be improved by installing additional or more thick glass. To all of the above, it is worth adding that you can increase the heat -insulating properties of the window by replacing the air that is located between the glasses. Most often, inert gas (crypton and argon) is used here, which, as everyone knows, worse conducts heat.