Aluminum is recyclable, sustainable, and versatile; three key qualities for any material being used to construct a green building.  Historically, aluminum has proven to be one of the most important materials in successful recycling programs.  Aluminum offers high scrap value, wide consumer acceptance, and aluminum recycling enjoys significant industry support.  In addition to recyclability, other eco-friendly qualities that aluminum touts while meeting green building requirements include its light weight-to-strength ratio, which allows for the reduction in weight of materials, and its extrudability, which accommodates off-site fabrication.