Ensure your semi is Ready for the Road Ahead with a smooth and reliable spring-operated door assembly, with the Whiting 94" Aluminum Roll Up Door Double Cable Balancer Assembly for #2376 Balancer. To make certain your roll up doors open and close with ease, this replacement balancer assembly is designed to offset the tremendous weight. Manufactured with corrosion and rust-resistant metals for extended use in harsh conditions and humid climates. FleetPride is your First Click in Heavy Duty .