There are many guardrail end terminal systems on U.S. roads and highways.
The ET Plus® extruder head is one component of the ET Plus® System manufactured by Trinity Highway Products, LLC. The ET Plus® extruder head is identified by its rectangular impact plate
with angled sides.
Only extruder heads with 4-inch guide channels were included in the additional tests requested by the FHWA.
If you have concerns regarding a particular guardrail end terminal in your area, please contact your local Department of Transportation. For your safety, do not attempt to personally measure any roadway equipment.