ClassicVue Max™ aluminum non-impact doors are built for durability, easy maintenance, and beauty that will last for years to come. This ClassicVue Max™ aluminum sliding glass door (SGD670) is our most popular, and it is one reason why we were recognized as #1 in Quality Patio Doors*. Offering easy operation and extra security, this door is perfect for inviting the outdoors in through your living room or master bedroom.