Super Anchor Truss Spanner With Detent Pin* The Truss Spanner can have 2 workers tied off to it at the same time allowing you to use fewer anchors than you thought. * The Truss Spanner installs directly onto Truss and can be used during the framing stage of your project. * This roof anchor can be used from the framing stage all the way through the sheeting phase of construction. * Simply feed tie off straps through or in between the sheeting during construction. * With the Truss Spanner, all