This is the formation of moisture, and in cold climates, frost on the inside of a window.

This is the process of finishing off the exterior portion of the newly installed window. To read more on Capping.

This is the name a certain window is being sold under. Often a window sold under a Brand, i.e. “Acme Window”, can be manufactured by a totally different company, or companies.

This is the term used to describe large home improvement material vendors, such as Lowes, Home Depot and to some extent Sears.

This is a gas that is forced into the space between the two panes in a double paned window. Its purpose is to increase the energy efficiency of the window.