It consists of a chassis (also called sub-chassis or false chassis), attached to the chassis of the vehicle, on which the platform is assembled with the dropsides open, thus permitting material to be unloaded to the right, to the left and/or to the rear.

1
Side dropsides.
2
Ladder holder
3
Closing handles.
4
Chest under tray (optional).
5
Side protection.
6
Wheel fenders.
7
Clearance lights.
8
Side step.
9
Rear dropside.