Low level single barriers are ideal for positioning at racking ends whilst high level double barriers can be used where pedestrians are in close proximity to forklift areas start with a single kit and extend infinitely using extension kits rails fitted with black plastic end caps rails h x l x d 40 x 165 x 4mm post uprights 90 x 50 x 36mm hollow steel section baseplates are 200 x 200mm with 3 pre drilled holes fixings included extension kits are supplied with one upright post onl