The Transglobal 225” x 40” x 96” Single Spring Operator Assembly ensures you are Ready for the Road Ahead™, being the crucial component to safely roll up your semi truck’s trailer door with ease. This roll door replacement operator assembly contains galvanized and stainless steel cable, aluminum cable drum, counterbalance shaft, winding plug, anchor plug, bearing assembly, and single spring with spring anchor bracket. FleetPride is your First Click in Heavy Duty®.