EnergyVueⓇ non-impact vinyl windows and doors beautify exteriors while providing exceptional energy efficiency that keeps energy bills low and indoor climates more comfortable. This EnergyVueⓇ sliding glass door (SGD5470) is our most popular, and it is one reason why we were recognized as #1 in Quality Patio Doors*. It features smooth operation while offering extra security, providing outdoor views from your living room or master bedroom.