Geared continuous hinges qualify for points for recycled content (up to 100% RECYCLED ALUMINUM), low-emitting materials (no VOCs) and regional materials (depending on your locations). Because they provide the longest-lasting solution for high-traffic doors, they save materials and energy. Our hinges have been proven to withstand 25,000,000 cycles - equal to more than 50 years of use on the average high-traffic door. A longer life cycle means fewer hinges used, which means fewer resources used, fewer emissions produced and fewer tons of waste. And fewer maintenance dollars and headaches for you. They last so long we back them with our never-ending Continuous Warranty™. They're a hassle-free way to make a greener building.