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 (5.48m), Retracted Length: 24.4 in (620mm) | Vevor | | Double Expandable Barricades, 18FT Expandable Safety Barrier, 0-180° Rotatable Mobile Barricade with Locking | White | Best Buy