Aluminium design.
Pantograph system for folding and unfolding the tunnel, locking system which reinforce the tunnel when unfolded.
Nylon (optionally rubber) wheels for folding and unfolding the tunnel.
Dimensions - standard: height 235 cm, width 190 cm (minimum width 150 cm - max. 600 cm, minimum height 180 cm - max. 350 cm), module length: 103 cm.
Coated with PVC (fire-resistance class: M2).
Standard colour scheme: dark-white, blue, grey or green.