ULD racks are used to store empty or full aircraft containers. ULD racks consist of gravity rollers, galvanized welded steel profiles with adjustable feet and limiters on all sides. Banks are also made of galvanized welded steel profiles that protect ULD racks from the impact of vehicles. The containers are brought by a towing trailer that is at the same height as the ULD, and they are attached to them, and the gravity rollers allow them to be moved very easily from one end of the rack to the other. ULD racks are a mandatory part of the program for the cargo sector at airports.