The time frame for each project varies widely based on many different factors from removal of old windows to any additional work that needs to be done for the project. Your windows will be custom made for your home in at the manufacturer, while this takes a little time it ensures that in most cases the installation process is quick and easy. Typically installation jobs require only one or two days, but it depends on the size of your project. Talk to your sales representative to get a better estimate of how long your project should take.