Enclosure glides easily in the mounted rails so panels are very easy to move into position with very little effort.

Albixon AIR Rails 

Suitable also for enclosures of M, L and L+ profiles.. A unique solution with hidden anchoring screws. Option for enclosures with low and high impact angles. Designed for barefoot walking. 
Height 20 mm

POPP Rails 
Compact and designed for barefoot walking. The tracks are coated with resistive silver or anthracite anodizing.
Height 15mm