Each Ramp Door Spring is a complete system, designed for enclosed (cargo and specialty) trailers, and includes everything necessary for proper installation, except mounting bolts. The system features a dual drum and dual cable to prevent the ramp door from free falling in the event one cable is accidentally cut. The universal mounting bracket has two 3/8” holes that allow the installer to bolt to the rear header or
the bracket can be welded. The four part numbers offered cover a majority of enclosed trailers, but custom
assemblies are also available for finished door weights ranging from 50 lbs. to 300 lbs. The system
is warranted for three years against defects in material and/or workmanship.tom