Outfit your semi to be Ready for the Road Ahead™ with a smooth and reliable spring-operated door assembly, with the Todco 6.12" Steel Roll Up Door Center Hinge. With a robust design, this replacement hinge is the ideal solution to allow your door to freely move when opening or closing. Crafted with rust and corrosion-resistant metals for long-term durability in humid climates and rugged conditions. FleetPride is your First Click in Heavy Duty®.