Our SELECT HINGES go through a stringent manufacturing process controls and rigid attention to craftsmanship in design enables SELECT to provide you with a hinge that exceeded 25,000,000 open/close cycles in independent tests -- more than most doors will ever see in 60+ years of daily performance. Durability is definitely GREEN. are extruded from recycled aluminum. The recycling, long product life cycle and reduced waste (avoiding discarded replacement hinges) help your building qualify for U.S.G.B.C. LEED points.