JSP Titan Expander Barrier - Red/White - 3.1mCompatibility The Titan Expander can conveniently link to JSPs Titan and Frontier Barriers Compact When closed the Titan Expander Barrier is just 550mm which makes it extremely practical for transporting and carrying around Flexibility Expanding action gives user length flexibility fixed length barriers systems do not have Feet Options Two feet options available; the standard foot and the New Anti trip Foot design, painted in a high visibility yellow