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The Security Height Road Blockers has lift height options of 353mm & 533mm, with widths up to 5m. Road Blockers provide higher levels of security with built in stopping power, and are used extensively for premises such as banks, embassies, bullion depots, cargo parks, ports and lorry parks. 100% duty rating - designed for continuous and frequent use. Power is supplied from a three phase 400V power supply as standard. The Road Blocker can be interfaced to any Access Control systems. Traffic Light System included as standard. It is recommended that the Road Blocker's hydraulic control cabinet is installed within 10metres of the blocker.