Conventional support rollers are installed on the floor of an aircraft cargo hold in a mounting profile that comprises side walls, and in an interior space of the mounting profile latch elements can be mounted in order to secure containers, pallets or similar items of freight. To reduce the construction expense, the weight, and the work of assembly, it is proposed that two external rollers be rotatably mounted, outside the interior space of the mounting profile, on an axle that passes through the side walls of the mounting profile.