Boom Barrier with sizes up to 6m Suitable for entrances to public and commercial buildings, car parks & sites etc Boom Barrier comes with Counterweight incorporated into barrier arm, New oblong profile barrier arm, Easier Locking Features, All steelwork is galvanised and powder coated, Bolt down as standard but Concrete in option available extra Sizes Overall length from 3m to 6m Drive Through Opening : 1 meter less than Overhall length