Our double expandable barricades easily extend or retract to fit different coverage needs, allowing you to quickly block off hazardous or restricted areas and help protect people nearby. Extendable Length: 18ft (5.46m), Retracted Length: 17.7in (450mm) | Vevor | | Double Expandable Barricades, 18FT Industrial Safety Barriers, Flexible Mobile Barricade with Locking Casters | Yellow | Best Buy