Sturdy, generously dimensioned edge and floor profile, high-strength positive jointing ensures permanent bonding between jacket and base sheet. End and side walls reinforced with peripheral beading and corner beads. One long side with fold-down section folding half-way, for more convenient loading and unloading. Side cutout with profile-section surround; profile-section joints continuously welded. Flap with bolt retainer and moving holding hinges. Running gear: 2 swivel and 2 fixed castors, corner-mounted, Ø 125 mm, 40 mm wide, easy running, rubber wheels, “non-marking”, roller bearings, thread guards.