Milgard The company offers its new 3D and 3D Max energy packages that let builders customize packages to specific regions. Builders start with an Energy Star–qualified window and door. The new package options give builders better and best scenarios to meet the demand for increased energy efficiency. The 3D package offers a window or door that is at least 10% more energy efficient than Energy Star–qualified models, while the 3D MAX package provides up to 26% more energy efficiency, depending on the series chosen. 800.645.4273.