Heavy Duty Warehouse Double Guard Rail Add-On UnitHandle It Heavy Duty Double Guard Rail Add On Unit Handle It Heavy Duty Warehouse Guard Rail Add On unit comes with two guard rails and one post column, Safety Barriers, and Forklift Guardrails tested to withstand 10,000 lbs. at 4 mph. Quick Ship stock in Milwaukee WI warehouse. Available 2 10 ft. Long x 43" Tall To make a line of guard rail first select a Starter Unit, and then select the size and number of Add On Units needed. Lift Out Adapters are