To properly size a ramp door spring system, please complete the following form.  We will crunch the numbers for you and provide quick feedback on the right system for you.  Alternatively, you can complete the following sheet and send it back to us.

M-3 Spring System Spec Template

Spring System Specs

Data for specifying a spring system.
  • Please enter a number from 0 to 9999.
    Hinged weight of the door, as measured with the door resting on a scale on the ground.
  • Please enter a number from 0 to 200.
    Height of the door from the hinge to the top of the door.
  • Please enter a number from 0 to 50.
    Height of the trailer from the ground to the door hinge
  • Please enter a number from 0 to 200.
    Height for the hinge to the center of spring system tube.
  • Please enter a number from 0 to 200.
    Width of the door opening
  • Please enter a number from 0 to 50.
    Distance from the end of the door to the cable attachment point.
    Steel or Aluminum attachment point for the spring system.