The RRT-3930 & RRT-3931 are hinged-type car stops designed for permanent installation on either flush or exposed rails.
In the raised position, they protect workers, warehouse doors, crossover walks, etc., or they can swing down out of the way.
The RRT-3930 & RRT-3931 may be padlocked (padlock not included) in either the up or down position.
Car Stops are sold per unit, but must be used in pairs.
A pair consists of one right-hand stop and one left-hand stop