Equip your semi to be Ready for the Road Ahead , with the Todco 96" Steel Operator Shallow Header Door, a key component to provide your semi with a smooth and reliable spring-operated door assembly. To offset the weight of the rolling door, this replacement counterbalance supplies the needed strength and force so that users can open and close as needed. Built with corrosion and rust-resistant metals for long-term durability in harsh conditions and humid climates. FleetPride is your First Click in Heavy Duty .