Manual Raise Arm Barriers - Heavy Duty 6.0m to 9.0mManual Raise Arm Barriers Heavy Duty 6. 0m to 9. 0m The Heavy Duty Manual Raise Arm Barriers provides a low maintenance, cost effective way of manually controlling access to unauthorised areas on a permanent or temporary basis. Durable and hard working, this manual raise arm barrier has been manufactured for the last 32 years and compromises a robust and high quality pivot post, lockable end rest and aluminium boom. Carefully designed pivot post has