Compact Galvanised Boom Barrier with an aluminium reflective red & white arm with a choice of maximum drive through widths from 2960-5960mm Unique Gas Strut Operation Aluminium reflective boom Anti-Sit feature boom arm An integrated support arm Automatically locking in both open & closed positions Key operated (to differ) standard Optional Keyed alike version or triangular key use Surface fixed as standard (optional sub-surface on request)