Regulation height toe boards of 15cm, and intermediate guard rails for those in an 'at work' setting, required by Health and Safety when doing building maintenance work, to equip their access equipment with these two features.
Fitted for you to standard Hi-Step Platforms at point of dispatch or supplied for simple fitting by you if purchased at another time. Suitable only for 2012 Hi-Steps or later.
Not mandatory when in a horticultural setting or for home owners doing their own work.