For optimised security for entrances and exits up to six metres wide, road blockers are recommended. They are available in the Road Blocker 500 variant with a barrier height of 500 mm or in the Road Blocker 1000 version with a barrier height of 1000 mm. Road Blockers 500 SF and 1000 SF can easily and quickly be fitted on any suitable ground surface as they do not require excavation work