1. The legs hold the rail's head at a height of (usually average) 1300 mm above the floor.
2. The length of a leg can be adjusted by at least ± 20 mm (better ± 30 mm) to compensate uneven floors.
3. The legs are fixed to the frame – but not to the profile ends – in a way that they cannot jiggle or fall out if the module is moved, lifted or tilted.
4. Cross-Beams between the legs (or other appropriate) prevent the layout to wag across.
5. The feet are designed (for example covered with soft caps or pasted with disks of felt) not to damage even sensitive floors.

The decision for one leg-system or a mixed form will always depend from individually requirements. As time goes by several constructions raised, only some of them can be described here as an example.

1. Double-legs: They mostly consist in a construct, similarly to a ladder, with adjustable screws at the lower end. 
   + Very robust, clipboards can be inserted easily. 
   – Needs a lot of space during the transport.
2. Single-legs: Here are fittings mounted at the frame, which hold wooden or metal legs by an attachment screw. 
   + Adjustment can be done by a single person, needs lesser space than double-legs. 
   – Modules can wag easily because of missing cross-beams.
3. Universal legs: They consist in a board, with approximately 80 cm length, which has fittings for two short legs and the necessary attachment screws. 
   + Adjustment can be done by a single person, transport can be done in or at the module, clipboards and more can be integrated easily, a height for other module systems can be established easily.
4. Legs, made from protection housings: The housings will be fitted vertically under the module. Fine-tuning is done with feet of adjustable screws . 
   + The module is best protected during the transport. 
   – Module and box must match.
5. Racks: Sometimes stations are put on racks, whereby especially groups of segments can be assembled easier.

Many:

Less:

Compromise: